Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4661714 | Electric marine propulsion system | George B. Field, Jr. | 1987-04-28 |
| 4455468 | Process and device for splicing metal shafts by arc welding and spliced shaft made by such process | — | 1984-06-19 |
| 4342336 | Double-acting inflatable seal | Dennis M. Riddleberger | 1982-08-03 |
| 4250926 | Closure device with peripheral double acting inflatable seal | Dennis M. Riddleberger | 1981-02-17 |