Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5527153 | Variable pitch propeller | — | 1996-06-18 |
| 4682643 | Method of producing molded parts and casting pattern therefor | Neno T. Nenov | 1987-07-28 |
| 4423646 | Process for producing a rotary drilling bit | — | 1984-01-03 |