Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5089302 | Process for fixing wooden articles pressure treated with chromated-copper-arsenate | John N. R. Ruddick, Douglas B. Whiting | 1992-02-18 |
| 4368763 | Apparatus for controlled cutting down of trees | — | 1983-01-18 |