Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Communications
Class Information
Number: 178/69.6
Name: Telegraphy > Systems > Call
Description: Means for signaling a remote operator, who, in response to such signaling connects the recorder.










Patents under this class:

Patent Number Title Of Patent Date Issued
4229621 Transmitting means for use in a high speed, low noise digital data communication system Oct. 21, 1980
4229623 Receiving means for use in a high speed, low noise digital data communication system Oct. 21, 1980
4229741 Two-way communications system and method of synchronizing Oct. 21, 1980











 
 
  Recently Added Patents
Systems and methods for printing images outside a normal color gamut in image forming devices
Method of motion correction in optical coherence tomography imaging
Display device and method of manufacturing the same
Dual work function recessed access device and methods of forming
Semiconductor devices and methods for changing operating characteristics and semiconductor systems including the same
Tap initialization of equalizer based on estimated channel impulse response
Image capture and identification system and process
  Randomly Featured Patents
Corticotropin releasing factor antagonists
Method for determining shear-wave velocity model for depth migration of mode-converted data
Highchair
Cat puppet
Delay circuit
Assembly for the temporary attachment of a vertical masonry guide to the inner leaf of a cavity wall
Method and system for generating schema to Java mapping descriptors and direct mapping of XML schema and Java interfaces
Feeding mechanism of an automatic pipe bending machine
Dynamic random access memory device having static column mode of operation without destruction of data bit
Method and system for compensating for adjacent tracks during reading of data