US3016992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizer for fluid cylinder plungers of high slenderness ratio
Assignee: Oil States Industries Inc
•
Filing: 1957-10-24
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Granted: 1962-01-16
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Expires: 1977-10-24
Abstract
No abstract record available.
Inventors
- 👤 Wilson John Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:39
CPC Classifications
E; E21; E21B; E21B15/00; B; B66; B66C; B66C13/00; B66C13/18; B66C23/00; B66C23/62; B66C23/64; B66C23/70; B66C23/701; B66C23/705; B66C2700/00; B66C2700/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |