U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Quotables

"I hate what they've done to my child...I would never let my own children watch it. "

Vladimir Zworykin, television pioneer ; Talking about an invention in which he played a critical role.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 379/108.01 - Telegraphy


Subclass of Class 379 - Telephonic communications
Definition: Subject matter for transmitting a telephone signal over
No. of patents: 3
Last issue date: 06/12/2001


NumberTitleIssue Date
6246753Automatic message filing system
An automated message filing system includes a teletype machine having an input for receiving data and at least one port member for enabling a bidirectional transfer of the received data. A computer is also provided having at least one port member for enab...
06/12/2001
4282399Shared maintenance terminal system
A shared maintenance terminal system permitting the joint use of a teletypewriter located at a telephone switching center by the switching center and by a remotely located data processing center. This maintenance terminal system provides interlock control...
08/04/1981
4040013Citizens alarm system
A combined police and fire alarm system has provision for voice communication between street corner boxes and a central station via existing telegraphic cables. The boxes automatically transmit identification signals to the central station upon being acti...
08/02/1977
 
Sign InRegister
Username  
Password   
forgot password?