Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5329294 | User refillable ink jet cartridge and method for making said cartridge | Fred Keen | 1994-07-12 |
| 4964910 | Transfer fluid for spirit duplicating systems | Donald R. Beck, Loren Shelffo | 1990-10-23 |