Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4330133 | Dual-ring seal with temperature compensation | Jack Palfreyman, James P. Angus | 1982-05-18 |
JR
John M. Robertson
Overall (1982): #51,613 of 81,411Top 65%
1
Patents 1982