Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4706244 | Frequency multiplexed telephone system | George A. Watson, Ramon S. Co, James L. Fuhrman | 1987-11-10 |
| 4623195 | Position retaining device for draftsman chair | — | 1986-11-18 |
| 4586440 | Controlled mounting for luminaire on tiltable drafting board | — | 1986-05-06 |
| 4508305 | Tilt lock means for a drafting table | Sigurd A. Johnson, Robert JONES | 1985-04-02 |
| 4383375 | Drafting apparatus | Charles C. Matthews | 1983-05-17 |