Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7841561 | Internal support structure for an airship | — | 2010-11-30 |
| 7669796 | Hoop stress reduction in a buoyant airship | — | 2010-03-02 |
| 6793180 | Lighter than air foldable airship | John Fabel | 2004-09-21 |
| D432137 | Mouse pad | Henry N. Holtzman, Patricia S. Robertson, David M. Kroll | 2000-10-17 |