Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5064868 | Sprayable lightweight ablative coating | William G. Simpson, William E. Hill | 1991-11-12 |
| 4204899 | Cork-resin ablative insulation for complex surfaces and method for applying the same | Hill M. Walker, William G. Simpson | 1980-05-27 |