Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4373422 | Reciprocating feed system | William J. Washburn, Clifford E. La Fever | 1983-02-15 |
| 4253376 | Termination accumulator | William J. Washburn, Clifford E. LaFever | 1981-03-03 |