Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4572032 | Rethreading die and method | — | 1986-02-25 |
| 4237662 | Structural members, method and apparatus | — | 1980-12-09 |
| 4225372 | Surface finishing | James T. Heffernan, Leroy G. Fehrenkamp, William S. Lee | 1980-09-30 |