| 9544166 |
Access gateway management system |
— |
2017-01-10 |
| 8570855 |
Access gateway management system |
— |
2013-10-29 |
| 8351578 |
System for installation testing of telephone line terminations |
— |
2013-01-08 |
| 7953210 |
Switch proxy for providing emergency stand-alone service in remote access systems |
Peter G. Ruether |
2011-05-31 |
| 7680252 |
Switch proxy for providing emergency stand alone service in remote access systems |
— |
2010-03-16 |
| 5488413 |
CATV telephony system using subsplit band for both directions of transmission |
Donald L. Bise, Terry D. Bolinger, Peter G. Ruether |
1996-01-30 |
| 5392349 |
Overvoltage protection scheme for subscriber loops and method of performing same |
— |
1995-02-21 |
| 5197068 |
Intra channel bank communication protocols between channels and the line interface unit of a telephone system |
David Lee Holien, David J. Farrell |
1993-03-23 |
| 4804944 |
Hall effect liquid level sensing apparatus and method |
James D. Golladay |
1989-02-14 |