Issued Patents All Time
Showing 76–84 of 84 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5148634 | Scissor sharpening apparatus with magnetic guide | Robert P. Bigliano | 1992-09-22 |
| D328410 | Knife sharpener | — | 1992-08-04 |
| 5005319 | Knife sharpener | — | 1991-04-09 |
| D310620 | Knife sharpener | — | 1990-09-18 |
| 4897965 | Knife sharpening apparatus | — | 1990-02-06 |
| D303209 | Knife sharpener | — | 1989-09-05 |
| 4807399 | Method and apparatus for sharpening a knife | — | 1989-02-28 |
| 4716689 | Methods and apparatus for knife and blade sharpening | — | 1988-01-05 |
| 4627194 | Method and apparatus for knife and blade sharpening | — | 1986-12-09 |