Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5248146 | Putting trainer device | Alan K. Viets, Richard Frechette | 1993-09-28 |
| 4451166 | Inked ribbon cartridge with ribbon drag device | Helge H. Reuter | 1984-05-29 |
| 4408913 | Inked ribbon cartridge ribbon with supply spool drag device | — | 1983-10-11 |
| 4210296 | Ribbon cartridge with integral anti spool rotation device | — | 1980-07-01 |