Issued Patents All Time
Showing 51–71 of 71 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5624001 | Mechanical-hydraulic double-acting drilling jar | — | 1997-04-29 |
| 5511718 | Process for making monolayer superabrasive tools | James T. Lowder | 1996-04-30 |
| 5318139 | Reduced waiting time hydraulic drilling jar | — | 1994-06-07 |
| 5272563 | Car head-up displays including an adjustable plane mirror lensless non-diffractive | Robin A. Merryweather, Andrew P. Ramsbottom, Stuart W. Robb | 1993-12-21 |
| 5232060 | Double-acting accelerator for use with hydraulic drilling jars | — | 1993-08-03 |
| 5086853 | Large bore hydraulic drilling jar | — | 1992-02-11 |
| 4985206 | Tissue processing apparatus | David J. Bowman, Raymond F. Cosgrove, Terence P. Male | 1991-01-15 |
| 4844183 | Accelerator for fishing jar with hydrostatic assist | — | 1989-07-04 |
| 4705630 | Centrifugation | Alan J. Gordon, Donald G. Billington, David J. Bowman | 1987-11-10 |
| 4657084 | Twin seal well packer | — | 1987-04-14 |
| 4604964 | Tissue processing apparatus | Alan J. Gordon, David W. Sterritt | 1986-08-12 |
| 4601333 | Thermal slide joint | — | 1986-07-22 |
| 4587970 | Tachycardia reversion pacer | Loraine K. Holley | 1986-05-13 |
| 4566546 | Single acting hydraulic fishing jar | — | 1986-01-28 |
| 4506736 | Pressure biased seal compressor | — | 1985-03-26 |
| D276837 | Equalizing valve manifold | — | 1984-12-18 |
| 4469173 | Expendable plug assembly | Bruce Gilbert | 1984-09-04 |
| 4441559 | Retrievable well packer | James W. Montgomery | 1984-04-10 |
| 4361195 | Double acting hydraulic mechanism | — | 1982-11-30 |
| 4332267 | Ball valve assembly | — | 1982-06-01 |
| 4293038 | Ball valve assembly | — | 1981-10-06 |