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Class Information
Number: 307/1
Name: Electrical transmission or interconnection systems > Superimposed unlike currents
Description: Subject matter relating to systems having a common portion in which unlike currents flow or unlike potentials exist.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7576447 |
Control and supply system |
Aug. 18, 2009 |
| 7560825 |
Network devices for separating power and data signals |
Jul. 14, 2009 |
| 7449796 |
Power over ethernet controller suitable for multiple modes |
Nov. 11, 2008 |
| 7173345 |
Multi-function integrated automation cable connector system and method |
Feb. 6, 2007 |
| 6750560 |
Electromagnetically coupled device |
Jun. 15, 2004 |
| 5933072 |
Current level control for TWACS inbound communications |
Aug. 3, 1999 |
| 5838227 |
Radio controlled engine kill switch |
Nov. 17, 1998 |
| 5742225 |
Arrangement for signal transmission between a transmitting station and a receiving station |
Apr. 21, 1998 |
| 5696480 |
Communications apparatus for preventing an adverse effect on a processing analog signal produced at a loop connection time due to charging/discharging |
Dec. 9, 1997 |
| 5448231 |
Method and apparatus for transmitting signals on a transmission line |
Sep. 5, 1995 |
| 5438678 |
Self-powered computer accessory device for power extraction from attached data signals and method of operating thereof |
Aug. 1, 1995 |
| 5153448 |
Information separation device |
Oct. 6, 1992 |
| 5046807 |
Fibre optic transmission system |
Sep. 10, 1991 |
| 4899062 |
Process and apparatus for the generation of transmission current signals in an alternating current distribution network |
Feb. 6, 1990 |
| 4837452 |
Off-line dc power supply |
Jun. 6, 1989 |
| 4746897 |
Apparatus for transmitting and receiving a power line |
May. 24, 1988 |
| 4746809 |
AC power line signaling system |
May. 24, 1988 |
| 4672280 |
Mobile robot calling system |
Jun. 9, 1987 |
| 4550306 |
Signal transmission system for fire alarm junction line |
Oct. 29, 1985 |
| 4540890 |
System for selectively addressing electrical control signals from a control unit to a plurality of remote units |
Sep. 10, 1985 |
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