Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D310828 | Personal computer | Douglas R. Grundstrom, Dennis J. Boyle, Nelson Au, Michael J. Nuttal | 1990-09-25 |
| 4912586 | Rolling clock device | — | 1990-03-27 |
| 4560181 | Wheelchair operated by hand pedalled reciprocating motion | — | 1985-12-24 |