Issued Patents All Time
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5795169 | Elevated electrical connector assembly | — | 1998-08-18 |
| 5615736 | Unitary diversionary-tubing hanger and energizable rod seal | — | 1997-04-01 |
| 5577556 | Unitary diversionary-tubing hanger and energizable rod seal | — | 1996-11-26 |
| 5544706 | Retrievable sealing plug coil tubing suspension device | — | 1996-08-13 |
| 5148865 | Multi-conversion wellhead assembly | — | 1992-09-22 |
| 5000719 | Retrievable sealing plug and method of making same | — | 1991-03-19 |
| 4804045 | Oil and gas well diversionary spool assembly | — | 1989-02-14 |
| 4708201 | Top entry electrical transmission assembly for submersible pumping | — | 1987-11-24 |
| 4627489 | Top entry electrical transmission safety assembly for submersible pumping | — | 1986-12-09 |
| 4532987 | Geothermal expansion spool piston | — | 1985-08-06 |
| 4491176 | Electric power supplying well head assembly | — | 1985-01-01 |
| 4479537 | Power tubing hanger and tubing string lifting assembly | — | 1984-10-30 |
| 4448247 | Geothermal well head clean out and shut off assembly | — | 1984-05-15 |
| 4391324 | Geothermal well head and actuator assembly | — | 1983-07-05 |
| 4342363 | Geothermal well head | — | 1982-08-03 |
| 4299395 | Geothermal well head assembly | — | 1981-11-10 |