Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5055317 | Method for coating elongated workpieces | Harry O. Hoffman, Mark A. Johnston | 1991-10-08 |
| 4971537 | Apparatus for puttying elongated plywood boards | Harry O. Hoffman, Steve P. Zarnosky | 1990-11-20 |