US2653792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Check valve with plug mating a flanged nonmetallic sealing element
Assignee: Marquette Metal Products Co
•
Filing: 1949-11-05
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Granted: 1953-09-29
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Expires: 1969-11-05
Abstract
No abstract record available.
Inventors
- 👤 Columbus R Sacchini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:10
CPC Classifications
F; F16; F16L; F16L29/00; F16K; F16K15/00; F16K15/02; F16K15/025; F16K15/026; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US684099A
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US1342734A
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US1930839A
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US2135004A
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US2329960A
Cited
US2495880A
Cited
US2394272A
Cited
US2490511A
Cited
US2509656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-09-28 | 1957-03-30 | 1957-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-28 | 1961-03-30 | 1961-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-28 | 1965-03-30 | 1965-09-29 | $7700.00 | Window Closed / Lapsed |