Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7889474 | Manually-controlled arc flash energy reduction system and method for circuit breaker trip units | Helmut Weiher, Jeffrey W. Patterson | 2011-02-15 |
| 7646575 | Manually-controlled arc flash energy reduction system and method for circuit breaker trip units | Helmut Weiher, Jeffrey W. Patterson | 2010-01-12 |
| 7570471 | Circuit breaker trip unit with zone selective interlock and system monitoring | Helmut Weiher, Jeffrey W. Patterson | 2009-08-04 |