Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4521176 | Shoe upper cavity shell | Donald B. McIlvin | 1985-06-04 |
| 4344199 | Machine for stiffening sheet material | John G. Hollick, Donald B. McIlvin, Frederick S. Sillars | 1982-08-17 |