Patents per Year
Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5069284 | Wear resistant rod guide | — | 1991-12-03 | |
| 4986210 | Apparatus for coating pipe threads | Thomas E. Hollstein, Larry W. Keefer, Terrence M. Fulkerson | 1991-01-22 | $1,679,000 |
| 4905760 | Sucker rod coupling with protective coating | — | 1990-03-06 | $896,000 |
| 4823456 | Method for protecting sucker rod couplings from abrasion and corrosion | — | 1989-04-25 | |
| 4668534 | Method and apparatus for applying fusion bonded powder coatings to the internal diameter of tubular goods | — | 1987-05-26 | |
| 4626658 | Electrically heated tool for soldering pipe connector sleeves | Albert R. Tucker | 1986-12-02 | |
| 4417261 | Transferred electron devices | James Pattison, Huw Rees | 1983-11-22 | |
| 4238763 | Solid state microwave devices with small active contact and large passive contact | Leonard D. Irving | 1980-12-09 |