Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5296663 | Electric switch | Robert E. Borchardt, Grant W. Nelson | 1994-03-22 |
| 5138296 | Electric switch | Robert E. Borchardt, Grant W. Nelson | 1992-08-11 |
| 4851621 | Operating handle for an enclosed electric switch | Robert E. Borchardt | 1989-07-25 |