Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5039469 | Method of making plastic tooling with compression adjustment | William A. Martell, Robert P. VanJaarsveld, Colin R. Brown | 1991-08-13 |
| 4976400 | Plastic tooling with compression adjustment | William A. Martell, Robert P. VanJaarsveld, Colin R. Brown | 1990-12-11 |
| 4601867 | Method of making cast-to-size epoxy tools for stamping sheet metal panels | William A. Martell | 1986-07-22 |