Bowyer; Michael L.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Bowyer; Michael L..The latest application filed is for "apparatus with annulus safety valve for through tubing injection and method of use".
- Bowyer; Michael L. - Aberdeen GB6
| Patent | Date |
|---|---|
| Apparatus with annulus safety valve for through tubing injection and method of use Grant 4,478,288 - Bowyer October 23, 1 | 1984-10-23 |
| Equalizing annulus valve Grant 4,460,040 - Bowyer July 17, 1 | 1984-07-17 |
| Adjustable safety valve Grant 4,446,922 - Bowyer , et al. May 8, 1 | 1984-05-08 |
| Adjustable spacer with rotational lock Grant 4,433,725 - Bowyer February 28, 1 | 1984-02-28 |
| Control pressure actuated downhole hanger apparatus Grant 4,432,417 - Bowyer February 21, 1 | 1984-02-21 |
| Annulus safety apparatus Grant 4,423,782 - Bowyer January 3, 1 | 1984-01-03 |
| Selective no-go apparatus Grant 4,406,325 - Bowyer September 27, 1 | 1983-09-27 |
| Selectively bridged expansion joint Grant 4,281,858 - Bowyer August 4, 1 | 1981-08-04 |
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