Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841680 | Inverted cell pad material for grinding, lapping, shaping and polishing | Mark F. Hoffstein | 1989-06-27 |
| 4323374 | Air filter assembly | Tsunehiko Inoue | 1982-04-06 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841680 | Inverted cell pad material for grinding, lapping, shaping and polishing | Mark F. Hoffstein | 1989-06-27 |
| 4323374 | Air filter assembly | Tsunehiko Inoue | 1982-04-06 |