Issued Patents All Time
Showing 51–61 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5180016 | Apparatus and method for placing and for backwashing well filtration devices in uncased well bores | Henry Restarick | 1993-01-19 |
| 5113939 | Single bore packer with dual flow conversion for gas lift completion | Richard M. Sproul, Ross M. McCurley, Carter R. Young | 1992-05-19 |
| 5103902 | Non-rotational versa-trieve packer | Ralph H. Echols | 1992-04-14 |
| 5096209 | Seal elements for multiple well packers | — | 1992-03-17 |
| 5048610 | Single bore packer with dual flow conversion for gas lift completion | Richard M. Sproul, Ross M. McCurley, Carter R. Young | 1991-09-17 |
| 4886113 | Positive indication shear ring | Frank Giusti, Jr., James D. Hendrickson | 1989-12-12 |
| 4844154 | Well packer | Pat M. White | 1989-07-04 |
| 4840229 | Multiple position service seal unit with positive position indicating means | Lewis D. Proctor, Brian P. Manzi, Frank Giusti, Jr. | 1989-06-20 |
| 4834175 | Hydraulic versa-trieve packer | Pat M. White | 1989-05-30 |
| 4722392 | Multiple position service seal unit with positive position indicating means | Lewis D. Proctor, Brian P. Manzi, Frank Giusti, Jr. | 1988-02-02 |
| 4396061 | Locking mandrel for a well flow conductor | Jack W. Tamplen, Timothy J. Noack, Jimmie R. Williamson, Jr. | 1983-08-02 |