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Class Information
Number: 178/2B
Name: Telegraphy > Systems > Code changers
Description:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5499285 |
Automated telephone system with TDD capability |
Mar. 12, 1996 |
| 5388146 |
Automated telephone system using multiple languages |
Feb. 7, 1995 |
| 5095179 |
Extensive morse code processing system |
Mar. 10, 1992 |
| 4959847 |
Telecommunications device with automatic code detection and switching |
Sep. 25, 1990 |
| 4884287 |
Converter device for interconnecting systems having different communication standards |
Nov. 28, 1989 |
| 4752765 |
Apparatus, method and algorithm for encoding and decoding characters in a message to be transmitted between a first system and a second system |
Jun. 21, 1988 |
| 4649231 |
Method for the transmission of characters by means of the code combinations of a telegraph alphabet |
Mar. 10, 1987 |
| 4547628 |
Data transmission system |
Oct. 15, 1985 |
| 4511758 |
Reduction of message length in a communication system |
Apr. 16, 1985 |
| 4477695 |
Microprocessor operated telecommunications interface for a terminal of an automatic teletypewriter switching service |
Oct. 16, 1984 |
| 4431864 |
Communications system input-output converter |
Feb. 14, 1984 |
| 4430525 |
Circuit arrangement for connecting telex subscriber stations to teletex subscriber stations which are connected to the same data exchange system |
Feb. 7, 1984 |
| 4403111 |
Apparatus for interconnecting data communication equipment and data terminal equipment |
Sep. 6, 1983 |
| 4122299 |
Data output format modifying system |
Oct. 24, 1978 |
| 4093819 |
Closed user group facility |
Jun. 6, 1978 |
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