Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9074709 | Process for manufacturing sealed round metal ductwork | Vincent L. Bloom, Douglas G. Gudenburr, Christopher A. Armstrong | 2015-07-07 |
| 7992904 | Sealing mechanism for ductwork | Vincent L. Bloom, Douglas G. Gudenburr, Christopher A. Armstrong | 2011-08-09 |
| 6596952 | Locking mechanism for a rotary handle operator | Dean B. DeGrazia | 2003-07-22 |
| 5341191 | Molded case current limiting circuit breaker | Ronald W. Crookston, Douglas C. Marks, Richard E. White, Yun-Ko N. Chien, Steven Castelein +3 more | 1994-08-23 |
| 4928079 | Circuit breaker auxiliary switch assembly | Melvin A. Carrodus | 1990-05-22 |
| 4887055 | Modular option deck assembly | — | 1989-12-12 |