Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4468531 | Safety shield assembly for a drawout-type circuit breaker | James H. Postlethwait, Roger Kusek | 1984-08-28 |
| 4374405 | Insulating-isolating barrier system for electrical distribution equipment buswork | James H. Postlethwait | 1983-02-15 |
| 4363528 | Switchboard cubicle door hinge and latch arrangement | James H. Postlethwait, Jeffrey L. Winterstein | 1982-12-14 |
| 4361724 | Copper busbar of H-shaped cross-section | — | 1982-11-30 |
| 4360857 | Modular insulative support base for electrical switchgear | — | 1982-11-23 |
| 4347015 | Structural frame corner assembly for electrical switchboards and the like | — | 1982-08-31 |
| 4317160 | Electrical switchboard having improved drawout apparatus | Robert S. Tillson, James H. Postlethwait | 1982-02-23 |
| 4298771 | Bolted/welded joint and method of perfecting same | — | 1981-11-03 |
| 4288656 | Bolted/welded joint for switchboard run-in connector | — | 1981-09-08 |
| 4181396 | Aluminum-copper electrical joint | — | 1980-01-01 |