Patent US2803474A successfully refreshed from Google Patents.
US2803474A
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US
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Quick detachable joints
Assignee: Oil States Industries Inc
•
Filing: 1953-01-21
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Granted: 1957-08-20
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Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Wilson John Hart
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:49
CPC Classifications
F; F16; F16D; F16D1/00; F16D1/10; F16D1/108; F16D1/02; F16D1/033; F16B; F16B2200/00; F16B2200/50; F16B2200/503; Y; Y10; Y10T; Y10T403/00; Y10T403/70; Y10T403/7062
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1950207A
Cited
GB457418A
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US2168126A
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US2250448A
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US2259657A
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US2380646A
Cited
US2576872A
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US2707618A
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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) | 1960-08-19 | 1961-02-18 | 1961-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-19 | 1965-02-18 | 1965-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-19 | 1969-02-18 | 1969-08-20 | $7700.00 | Window Closed / Lapsed |