Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6290176 | Airship gondola suspension system and method of making same | John Hankinson, Richard Hankinson, George Spyrou | 2001-09-18 |
| D424508 | Airship | John Hankinson, Richard Hankinson, George Spyrou | 2000-05-09 |
| D289814 | Phonorecord cleaning table | — | 1987-05-12 |