Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4643439 | Seal for relatively rotatable parts | Frederick S. Lewis | 1987-02-17 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4643439 | Seal for relatively rotatable parts | Frederick S. Lewis | 1987-02-17 |