Patent US2967639A successfully refreshed from Google Patents.
US2967639A
Expired / Lapsed
US
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High pressure closure
Assignee: Standard Oil Co
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Filing: 1957-02-08
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Granted: 1961-01-10
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Expires: 1977-02-08
Abstract
No abstract record available.
Inventors
- 👤 Ward E Kuentzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:26
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/30; F16K1/307; F16J; F16J15/00; F16J15/02; F16J15/06; F16J15/08; F16J15/0881; F16L; F16L17/00; F16L17/06; F16L17/08; F17; F17C; F17C13/00; F17C13/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1992793A
Cited
US2102774A
Cited
US2226494A
Cited
US2278882A
Cited
GB538517A
Cited
US2305590A
Cited
US2582995A
Cited
US2687229A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |