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
Device for accurately measuring concentration of component in blood and control method of the device
Irreversible thermochromic ink compositions
Method for generating optical codes for a print-context
Solid-state image pickup element, method of manufacturing the same, and image pickup apparatus including the same
Image sensor with improved color crosstalk
Lentiviral gene transfer vectors and their medicinal applications
Method for facilitating assessment of a coursework answer and moderating the assessment
  Randomly Featured Patents
Cantilevered roof construction
Personal wireless gateway and method for implementing the same
Liquid level gauge
Modified carboxylated polyolefins and their use as adhesion promoters
Versatile electrical fiber brush and method of making
Payment program for use in point-of-sale transactions
Process for preparing .alpha.-olefin polymers and oligomers
Collision-protection device for vehicle passengers
Armrest
Generating image data