Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6575620 | Method and device for visually measuring structural fatigue using a temperature sensitive coating | David Banaszak, Jeffrey D. Jordan, A. Neal Watkins | 2003-06-10 |
| 6371040 | Combined foam and inflatable collar assemblies for watercraft | Douglas Hemphill | 2002-04-16 |
| 6178911 | Automatically inflatable boat | Douglas Hemphill | 2001-01-30 |
| 5878685 | Foam collar and boat incorporating same | Douglas Hemphill | 1999-03-09 |