Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4616670 | High-low pressure pilot | John W. Duffy, David W. Shollenbarger | 1986-10-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4616670 | High-low pressure pilot | John W. Duffy, David W. Shollenbarger | 1986-10-14 |