Berryman; William O.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Berryman; William O..The latest application filed is for "hydraulic fishing jar having tandem piston arrangement".
- Berryman; William O. - Houston TX
| Patent | Date |
|---|---|
| Hydraulic fishing jar having tandem piston arrangement Grant 4,059,167 - Berryman November 22, 1 | 1977-11-22 |
| Substantially Constant Time Delay Fishing Jar Grant 3,851,717 - Berryman December 3, 1 | 1974-12-03 |
| Fluid Actuated Down-hole Drilling Apparatus Grant 3,840,080 - Berryman October 8, 1 | 1974-10-08 |
| Trigger Mechanism For Down-hole Adjustable Hydraulic Fishing Jar Grant 3,797,591 - Berryman March 19, 1 | 1974-03-19 |
| Mechanical Jar Grant 3,658,140 - Berryman April 25, 1 | 1972-04-25 |
| Hydraulically Operable Valves Grant 3,570,595 - Berryman March 16, 1 | 1971-03-16 |
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