Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6232855 | Circuit interrupter with covered accessory case, adjustable under voltage relay, self-retaining collar and one-piece rail attachment | Richard Paul Malingowski, Trent A. Chontas, William C. Farrow, Joseph F. Changle, Roger W. Helms +1 more | 2001-05-15 |
| 6052047 | Circuit interrupter with covered accessory case, adjustable under voltage relay, self-retaining collar and one-piece rail attachment | Richard Paul Malingowski, Trent A. Chontas, William C. Farrow, Joseph F. Changle, Roger W. Helms +1 more | 2000-04-18 |
| 5875885 | Combined wire lead and interphase barrier for power switches | Joseph F. Changle | 1999-03-02 |
| 5693923 | Motor operator for electrical switches | Lance Gula, Roger W. Helms, David Turner | 1997-12-02 |