Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4961471 | Post hole digger | — | 1990-10-09 |
| 4728809 | Pulse circuit for switching a grid electrode of an electron beam generator | Frank Fisher | 1988-03-01 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4961471 | Post hole digger | — | 1990-10-09 |
| 4728809 | Pulse circuit for switching a grid electrode of an electron beam generator | Frank Fisher | 1988-03-01 |