Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6662503 | Bathing enclosure wall panel | Brian D. Cowell, Mark A. Rothwell | 2003-12-16 |
| 6089526 | Ram type blowout preventor | — | 2000-07-18 |
| 5653418 | Ram-type blowout preventer | — | 1997-08-05 |
| 5593157 | Long life, low air permeable pressurized articles such as play balls | William J. Koros, I. Glen Hargis, Jason S. Harris | 1997-01-14 |
| 5399806 | Modular electrical wiring system | — | 1995-03-21 |
| 5374217 | Illusion creating for amusement and education | — | 1994-12-20 |
| 5011475 | Protector for intravenous and syringe needles | — | 1991-04-30 |
| 4721661 | Selectively removing unwanted magnetic toner from magnetic member to provide uniform high resolution image | Frederick W. Saunders, III | 1988-01-26 |
| 4602794 | Annular blowout preventer with upper and lower spherical sealing surfaces and rigid translation element | Gary R. Schaeper | 1986-07-29 |
| 4460149 | Annular blowout preventer with upper and lower spherical sealing surfaces | Gary R. Schaeper | 1984-07-17 |
| 4438900 | Locking mechanism for annular blowout preventer | Gary R. Schaeper | 1984-03-27 |
| 4290577 | Blowout preventer ram lock | — | 1981-09-22 |
| 4283039 | Annular blowout preventer with upper and lower spherical sealing surfaces | Gary R. Schaeper | 1981-08-11 |