US2887202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure actuated clutch mechanism
Assignee: Oil States Industries Inc
•
Filing: 1952-01-17
•
Granted: 1959-05-19
•
Expires: 1972-01-17
Abstract
No abstract record available.
Inventors
- 👤 Wilson John Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:39
CPC Classifications
F; F16; F16D; F16D25/00; F16D25/04; F16D25/048; F16D25/12; F16D25/14; F16D48/00; F16D48/02; F16D2048/0221; Y; Y10; Y10S; Y10S254/00; Y10S254/901
Claims Analysis
Total Claims: 0
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |