Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10549354 | Convertible center drill | — | 2020-02-04 |
| 5331258 | Synchronous-rectification type control for direct current motors and method of making | Robert Gordon Lankin, Richard Hellinga | 1994-07-19 |
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10549354 | Convertible center drill | — | 2020-02-04 |
| 5331258 | Synchronous-rectification type control for direct current motors and method of making | Robert Gordon Lankin, Richard Hellinga | 1994-07-19 |