Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 178
Name: Telegraphy >
Description: Means for transmitting to a distance messages, unlimited with respect to the extent of information they are adapted to convey, and the transmission and facsimile reproduction of written, printed, or otherwise produced characters, marks, pictures, etc., unlimited with respect to form or outline, by the utilization of conductive or inductive electrical current impulses or reversals, the elements of the messages being selected or composed at will, according to a prearranged code, or the transmitter being actuated or controlled by a previously designed pattern.










Class Number Class Name No. of Patents
178/74

Circuits

4
178/75

Manipulating switch

0
178/76

Retarded closer

0
178/79

Code transmitters

23
178/82R

Automatic dot

0
178/82A

And dash

1
178/82B

With electromagnet

0
178/80

Combined instruments

0
178/81

With typewriter

6
178/85

Oscillating contact

0
178/86

Reciprocating contact

1
178/83

Rotary contact

0
178/84

Drum

0
178/77

Combined instruments

1
178/78

Portable sets

0
178/114

Instrument tables

1
178/101

Keys

4
178/110

Finger buttons

3
178/108

Horizontal swing

0
178/107

Knife-edge pivot

0
178/102

Multiple contact

2
178/103

Multiple line

1
178/105

Reversible

0
178/104

Self-closing

1
178/106

Shifting contact point

0
178/109

Spring pivot

1
178/115

Learners' instruments

3
178/1

Miscellaneous

8
178/118

Receivers

3
178/89

Code recorders

1
178/97

Double-tape movement

0
178/92

Indenting or perforating

2
178/96

Inking devices

1
178/90

Photographic

2
178/93

Polarized

0
178/94

Pyrographic

1
178/91

Siphon

0
178/95

Stop mechanisms

1
178/119

Optical member

1
178/98

Sounders

0
178/100

Augmenting

2
178/99.1

Private (e.g., acoustically shielded)

0
178/120

With electron tube or solid-state device

1
178/70R

Repeaters

33
178/71.1

Automatic in either direction

18
178/71.5

Artificial line and relay

0
178/71.7

Code transformer

0
178/71.2

Distributor

0
178/71.4

Generator

0
178/72

Mechanical circuit retainer

1
178/71.3

Mechanical

0
178/73

Multiple line

7
178/71.9

One-way repeater switched

0
178/71.8

Oscillatory

1
178/71.11

Piezoelectric

0
178/71.13

Relay only

0
178/71.14

Supervisory, alarm, monitor

8
178/71.6

Vacuum tube and gas magnetron

0
178/71.12

Vacuum tube and relay

0
178/70H

Gas tubes

0
178/70K

And distributors

0
178/70J

Generator

0
178/70S

Having a carrier wave input

3
178/70M

Magnetic

0
178/70N

Magnetron repeaters

0
178/70D

Mechanical

0
178/70T

Oscillatory

2
178/70P

Photocell

0
178/70Q

Piezoelectric

0
178/70A

Relays only

0
178/70C

Rotary distributors

0
178/70E

Tuning forks

0
178/70TS

Using transistors

1
178/70F

Vacuum tubes

0
178/70G

With rotary distributors

0
178/70B

Vibrating relays

0
178/2R

Systems

43
 

Systems

 
178/66.1

Alternating or pulsating current

18
178/117

Coherer

0
178/67.1

Modified semicycle

1
178/116

Spark gap or arc discharge

5
178/66.2

Transmitter keying

0
178/3

Automatic

86
178/16

Current reversing

1
178/15

Photographic recorder

36
178/4

Printing

14
178/4.1R

Remote control

8
178/4.1B

Called station identification answer back system

2
178/4.1A

Radio-controlled

5
178/4.1C

Revertive signaling

1
178/17R

Transmitters or recorders

7
178/17C

Keyboard

61
178/17D

Light, capacity, pneumatic sensing

8
178/17E

Overlap

0
178/17.5

Storing

30
178/17A

Tape and/or keyboard

1
178/17B

Tape control

5
178/63R

Cable or capacity

15
178/63D

Cable mechanical structure

1
178/63C

Cable receivers

4
178/63A

Cable repeaters

2
178/63B

Cable transmitters

1
178/63F

Direction reversing

3
178/63E

Distortion correction and artificial lines

11
178/69.6

Call

3
178/62

Chemical

1
178/2B

Code changers

15
178/64

Coil transformer

0
178/2F

Coin-controlled, connecting, recording

0
178/65

Dynamo

0
178/47

Harmonic or reed

0
178/48

Recorders and receivers

1
178/69R

Line-clearing and circuit maintenance

20
178/69C

Balancing duplex cables

2
178/69L

Check back

1
178/69A

Distortion measuring

19
178/69M

Frequency measuring and compensating

2
178/69B

Interference neutralizing

7
178/69E

Leakage compensation

1
178/69K

Misc. gas-filled tube circuits

0
178/69G

Monitoring, alarm and pilot signals

31
178/69F

Neutralizing line capactive discharge

2
178/69N

Precorrectors

7
178/69H

Reiterative

1
178/69D

Zero wander neutralizers

3
178/45

Loaded circuit

11
178/46

Loading coils

22
178/18.01

Position coordinate determination for writing (e.g., writing digitizer pad, stylus, or circuitry)

1320
178/18.02

Error correction

168
178/20.01

Writing digitizer circuit

101
178/20.02

Electrical filter or multiplexer

49
178/20.04

Phase detecting

65
178/20.03

Sampling circuit

30
178/18.03

Writing digitizer pad

590
178/18.04

Acoustical (e.g., vibration, ultrasonic, etc.)

273
178/18.06

Capacitive

540
178/18.07

Inductive

287
178/18.08

Having shield

35
178/18.09

Optical

293
178/18.05

Resistive

381
178/18.11

With illumination

74
178/19.01

Writing digitizer stylus

478
178/19.06

Ac source

32
178/19.07

Multifrequency

35
178/19.02

Acoustical stylus

110
178/19.03

Capacitive or inductive stylus

219
178/19.05

Light pen

139
178/19.04

Pressure stylus

149
178/23R

Printing

34
178/24

Bulletin

1
178/30

Character elements

121
178/23A

Error detection in printers

6
178/31

Multiple-line circuit

1
178/32

With type-wheel recorder

2
178/25

Page

5
178/27

Selectors

1
178/26.1

Translators

2
178/28

With type-wheel recorder

1
178/29

Recorders

1
178/36

Recorders

0
178/42

Paper guiding or feeding

7
178/37

Privacy (e.g., mechanical packaging or covering of printed message)

5
178/38

With type wheel

1
178/39

Multiple

0
178/40

Shifting devices

1
178/41

Unisons

0
178/33R

Selectors

3
178/33A

Double selectors

1
178/33MP

Monopulse

0
178/34

With type-wheel recorder

6
178/35

With type-wheel recorder

1
178/2D

Round robins

7
178/2E

Satellite

1
178/2A

Simplex-reversing periodic

1
178/43

Space induction

5
178/21

Stenographic

9
178/49

Superposed current

2
178/2C

Way stations; party lines

14
178/111

Tapes

0
178/112

Perforated

0
 
 
  Recently Added Patents
Multichannel device utilizing a centralized out-of-band authentication system (COBAS)
Associating objects in databases by rate-based tagging
Aromatic amine derivative, organic electroluminescent element employing the same, and process for producing aromatic amine derivative
Transferases and oxidoreductases, nucleic acids encoding them and methods for making and using them
Isolated SCR ESD device
Jewelry
Wafer recycling method
  Randomly Featured Patents
Apparatus for locking and/or gripping modular attachments of boring heads, boring bars, intermediate members, adapters, tool holders, hydraulic punches, long tongs, or other mechanical members
Duct for feeding fibers to a pneumatic spinning chamber having a stationary whirl
Twin-barrel carburetor with an air-fuel ratio control device
Whipped cream making machine having a platform arrangement
Coolant composition
Process for freezing blood platelets
Display unit with processor and communication controller which communicates information to the processor
Two-dimensional circulating switch
Coordinating credentials across disparate credential stores
Memory control unit and memory control method and medium containing program for realizing the same