Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D346319 | Razor blade scraper | Leon E. Lavallee, Robert Howitt, Paul D. Cotnoir, R. Kurt Heinzmann | 1994-04-26 |
| 4993896 | Edge contouring system | David Michael Dombrowski, William D. Rouse, Robert Bean, Paul D. Cotnoir, David P. Asmus +1 more | 1991-02-19 |