Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6968989 | Manually operable device for driving nails | — | 2005-11-29 |
| 5873295 | Cutting guide | — | 1999-02-23 |
| 5715840 | Snore-repressing mouthpiece | — | 1998-02-10 |
| 4954002 | Writing instrument with membrane vent and their manufacture | Philip Wallis, Robert E. Burkhalter | 1990-09-04 |
| 4447916 | Mechanical knee | — | 1984-05-15 |