US2952482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coupling with automatically actuated cam sleeve
Assignee: E B WIGGINS OIL TOOL Co I
•
Filing: 1957-02-04
•
Granted: 1960-09-13
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Expires: 1977-02-04
Abstract
No abstract record available.
Inventors
- 👤 Jorge U Torres
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 02:11
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/12; F16L37/121
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR985539A
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US751345A
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US1841318A
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US1916284A
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FR847163A
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US2238706A
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US2425500A
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US2461699A
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US2473973A
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US2568516A
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US2699961A
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US2552543A
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US2789838A
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US2888278A
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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) | 1963-09-13 | 1964-03-14 | 1964-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-09-13 | 1968-03-14 | 1968-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-09-13 | 1972-03-14 | 1972-09-13 | $7700.00 | Window Closed / Lapsed |