| 9482699 |
Method and apparatus for monitoring high voltage bushings safely |
Edward S. Kwon, Mikhail Benis |
2016-11-01 |
| 9018962 |
Method and apparatus for protecting power transformers from large electro-magnetic disturbances |
Edward S. Kwon, Hong Cai |
2015-04-28 |
| 8274769 |
Apparatus and method for cooling power transformers |
Jeffrey G. Anderson |
2012-09-25 |
| 8260472 |
Cooling system for power transformer |
Jeffrey G. Anderson |
2012-09-04 |
| 7417411 |
Apparatus and method for monitoring tap positions of load tap changer |
Thomas C. Tennille |
2008-08-26 |
| 7323852 |
Sensing load tap changer (LTC) conditions |
— |
2008-01-29 |
| 6812674 |
Apparatus and method for testing battery condition |
— |
2004-11-02 |
| 6798874 |
System and method for enabling custom telephone features on a PBX system |
George F. Ohlinger, Joel Donelson |
2004-09-28 |
| 6714022 |
Apparatus and method for cooling power transformers |
— |
2004-03-30 |
| 6459998 |
Sensing downed power lines |
— |
2002-10-01 |
| 6222714 |
Microprocessor based setting group controller for protective relay operations |
— |
2001-04-24 |
| 4939617 |
Method and apparatus for monitoring an AC transmission line |
Walter L. Hinman, Jr. |
1990-07-03 |
| 4660035 |
Remote monitoring system |
— |
1987-04-21 |
| 4608563 |
Remote monitoring induction telemetering system |
— |
1986-08-26 |
| 4608564 |
Apparatus for the remote monitoring of meters and other devices |
— |
1986-08-26 |
| 4532501 |
Capacitively coupled machine tool safety system |
— |
1985-07-30 |
| 4518958 |
Capacitively coupled machine tool safety having a self-test network |
William A. Cook, William Miles Pulford |
1985-05-21 |