Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE33658 | Lubricants for reciprocating air compressors | Eldon L. Ward, Philip W. McGraw | 1991-08-06 |
| 4751012 | Lubricants for reciprocating air compressors | Eldon L. Ward, Philip W. McGraw | 1988-06-14 |