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US2816779A
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Hose coupling with fluid responsive seal
Assignee: PHILADELPHIA VALVE CO
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Filing: 1953-09-15
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Granted: 1957-12-17
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Expires: 1973-09-15
Abstract
No abstract record available.
Inventors
- 👤 James A Jensen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:53
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/06; F16L17/067; F16L17/073; F16L37/00; F16L37/24; F16L37/244; F16L37/252
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1020210A
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US1300414A
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AT105251B
Cited
US1971578A
Cited
US2046724A
Cited
US2071750A
Cited
US2132506A
Cited
US2461705A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |