US3131719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clamp retained seat rings
Assignee: Crane Co
•
Filing: 1961-12-18
•
Granted: 1964-05-05
•
Expires: 1981-12-18
Abstract
No abstract record available.
Inventors
- 👤 Joseph A Englert
- 👤 Kurt B Bredtschneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/02; F16K15/03; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7898
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1222081A
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US1230634A
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US2439024A
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US2717001A
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US2730119A
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US2763287A
Cited
US2685889A
Cited
US3014740A
Cited
US2840337A
Cited
US2773709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |