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Class Information
Number: 340/425.1
Name: Communications: electrical > Repeater in unspecified type communications line or channel (e.g., relay station)
Description: Subject matter comprising a generically recited transmission path (e.g., telecommunications or communications line) having signal retransmitting or amplifying equipment in the path.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7612686 |
Emergency underwater notification device |
Nov. 3, 2009 |
| 7564342 |
Audio signal system for vehicle remote locking mechanism |
Jul. 21, 2009 |
| 7460006 |
Conformal repeater unit |
Dec. 2, 2008 |
| 7408446 |
Burglar alarm device for vehicle |
Aug. 5, 2008 |
| 7403097 |
Conformal repeater unit |
Jul. 22, 2008 |
| 7224272 |
Power line repeater system and method |
May. 29, 2007 |
| 7199701 |
Repeater unit |
Apr. 3, 2007 |
| 7148811 |
Emergency underwater notification device |
Dec. 12, 2006 |
| 7098777 |
Electronic equipment communications system and repeater |
Aug. 29, 2006 |
| 7061371 |
Auto monitor |
Jun. 13, 2006 |
| 6972661 |
Anti-interference relay device for signal transmission |
Dec. 6, 2005 |
| 6904373 |
USB-controllable power supply |
Jun. 7, 2005 |
| 6628992 |
Remote terminal unit |
Sep. 30, 2003 |
| 6400281 |
Communications system and method for interconnected networks having a linear topology, especially railways |
Jun. 4, 2002 |
| 6037868 |
Alarm method and apparatus for a mobile communication repeating system |
Mar. 14, 2000 |
| 5930399 |
Data encoding for a communication channel supporting a subset of the characters to be transmitted |
Jul. 27, 1999 |
| 5838226 |
Communication protocol for transmission system for controlling and determining the status of electrical devices from remote locations |
Nov. 17, 1998 |
| 5835005 |
Power-line data transmission method and system utilizing relay stations |
Nov. 10, 1998 |
| 5781125 |
Arrangement for the wireless exchange of data between a servicing device and a control unit in a motor vehicle |
Jul. 14, 1998 |
| 5592507 |
Intermediate relay station of a digital microwave communication system using service channel for monitoring and controlling space and/or time diversity, heterodyne relay, phase control, freque |
Jan. 7, 1997 |
| 5572352 |
Apparatus for repowering and monitoring serial links |
Nov. 5, 1996 |
| 5475363 |
Disaster prevention monitoring apparatus |
Dec. 12, 1995 |
| 5349584 |
Method of maintaining control in a trunked communication system |
Sep. 20, 1994 |
| 5223816 |
Security and communication system with location detection |
Jun. 29, 1993 |
| 5162936 |
Apparatus for monitoring the operation of an optical repeater |
Nov. 10, 1992 |
| 5140308 |
Radio automatic alarm transfer system |
Aug. 18, 1992 |
| 4758822 |
Bidirectional amplifier |
Jul. 19, 1988 |
| 4695919 |
Circuit arrangement for protection against surge voltages for a repeater |
Sep. 22, 1987 |
| 4651134 |
Switched capacitor coupled line receiver circuit |
Mar. 17, 1987 |
| 4638298 |
Communication system having message repeating terminals |
Jan. 20, 1987 |
| 4528615 |
Repeater housing and circuit mounting structure |
Jul. 9, 1985 |
| 4362952 |
Apparatus and method for initiation of reciprocal remote feeding of intermediate stations of a communication installation |
Dec. 7, 1982 |
| 4136267 |
Transmission systems |
Jan. 23, 1979 |
| 4128743 |
Circuit arrangement for blocking a bidirectional amplifier against receiving outgoing signals |
Dec. 5, 1978 |
| 4025735 |
Negative conductance network |
May. 24, 1977 |
| 4007340 |
Distance-related variable gain amplifier |
Feb. 8, 1977 |
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