Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4358927 | Pressure operated proportional air management valve | Edward G. Day, Edward H. Seidewand | 1982-11-16 |
| 4342194 | Electric air control switching valve | John E. Jones | 1982-08-03 |