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Class Information
Number: 178/17C
Name: Telegraphy > Systems > Automatic > Transmitters or recorders > Keyboard
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6906695 |
Touch control apparatus and touch control method that can be applied to electronic instrument |
Jun. 14, 2005 |
| 6805506 |
Keyboard with multiple indicia sets |
Oct. 19, 2004 |
| 6748568 |
Apparatus and method for verifying proper data entry and detecting common typing errors |
Jun. 8, 2004 |
| 6288652 |
Digitally encoded keyless entry keypad switch |
Sep. 11, 2001 |
| 6236339 |
Key, input unit using such key, and control system comprising such input unit and electronic apparatus acoustically connected to such input unit |
May. 22, 2001 |
| 4616213 |
Capacitive multikey keyboard for inputting data into a computer |
Oct. 7, 1986 |
| 4599607 |
Acoustic keyboard |
Jul. 8, 1986 |
| 4555693 |
Multikey keyboard for inputting data into a computer |
Nov. 26, 1985 |
| 4529967 |
Non contacting inductive keyboard |
Jul. 16, 1985 |
| 4518951 |
Integrated circuit for a keyboard of an electronic apparatus |
May. 21, 1985 |
| 4502040 |
Keyboard having keys activated by electrical contacts and the capacity to read one state from among four possible states |
Feb. 26, 1985 |
| 4498073 |
Keyboard with simultaneous operations |
Feb. 5, 1985 |
| 4495485 |
Touch control arrangement for data entry |
Jan. 22, 1985 |
| 4442506 |
Portable word-processor |
Apr. 10, 1984 |
| 4430644 |
Encoding apparatus having an acoustic member with mirror-image tabs |
Feb. 7, 1984 |
| 4417824 |
Optical keyboard with common light transmission members |
Nov. 29, 1983 |
| 4415781 |
Membrane switch |
Nov. 15, 1983 |
| 4412209 |
RC Array |
Oct. 25, 1983 |
| 4395587 |
Method and apparatus for representing characters |
Jul. 26, 1983 |
| 4384633 |
Perforated acoustic transport member |
May. 24, 1983 |
| 4381500 |
Keyboard apparatus |
Apr. 26, 1983 |
| 4381501 |
Encoding apparatus utilizing acoustic waves of controlled initial polarity |
Apr. 26, 1983 |
| 4381502 |
Method and apparatus for character generation |
Apr. 26, 1983 |
| 4376469 |
Stepped acoustic transport member |
Mar. 15, 1983 |
| 4375060 |
Electronic apparatus having special key |
Feb. 22, 1983 |
| 4360892 |
Portable word-processor |
Nov. 23, 1982 |
| 4346369 |
Keyboard encoder-decoder |
Aug. 24, 1982 |
| 4344069 |
Method and apparatus for character generation |
Aug. 10, 1982 |
| 4344068 |
Coding schemes for acoustic delay line data collection system |
Aug. 10, 1982 |
| 4329541 |
Dialing system for teleprinter |
May. 11, 1982 |
| 4319077 |
Circuit for coded symbol conversion |
Mar. 9, 1982 |
| 4311991 |
Acoustic transmission member |
Jan. 19, 1982 |
| 4298861 |
Integrated ultrasonic magnetic encoder |
Nov. 3, 1981 |
| 4277778 |
Information transmitting system |
Jul. 7, 1981 |
| 4258356 |
Multi bar encoding apparatus utilizing acoustic energy |
Mar. 24, 1981 |
| 4241333 |
Key-operated arrangement for producing code characters |
Dec. 23, 1980 |
| 4231016 |
Input signal recognition circuit |
Oct. 28, 1980 |
| 4190826 |
Multidevice position digital encoder |
Feb. 26, 1980 |
| 4140872 |
Control system for functional sequences |
Feb. 20, 1979 |
| 4138197 |
Key actuator |
Feb. 6, 1979 |
| 4136336 |
Keyboard apparatus |
Jan. 23, 1979 |
| 4132487 |
Keyboard switch |
Jan. 2, 1979 |
| 4121048 |
Multiple shift electronic keyboard |
Oct. 17, 1978 |
| 4089401 |
Segmented printout device |
May. 16, 1978 |
| 4074262 |
Key input circuit |
Feb. 14, 1978 |
| 4072820 |
Apparatus for coding input data characters |
Feb. 7, 1978 |
| 4060163 |
Keyboard Guard |
Nov. 29, 1977 |
| 4050566 |
Mechanical code converter for use with a typewriter or the like |
Sep. 27, 1977 |
| 4048439 |
Control device of a teletypewriter to be used by invalids |
Sep. 13, 1977 |
| 4042777 |
One-handed keyboard and its control means |
Aug. 16, 1977 |
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