Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667252 | Internal sleeve with a plurality of lands and teeth | Bruce William Schafer, Stanley Mark Gryder, Randal Ray Schaefer | 1997-09-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5667252 | Internal sleeve with a plurality of lands and teeth | Bruce William Schafer, Stanley Mark Gryder, Randal Ray Schaefer | 1997-09-16 |