Patent US2936880A successfully refreshed from Google Patents.
Patent US2733889A successfully refreshed from Google Patents.
US2733889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve and fluid control conduit
Assignee: —
•
Filing: —
•
Granted: 1956-02-07
•
Expires: 1973-02-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:01
CPC Classifications
F; F24; F24F; F24F13/00; F24F13/08; F24F13/10; F24F13/14; F24F13/1406; F16; F16K; F16K1/00; F16K1/16; F16K1/18; F16K1/20; F16K1/2007; F16K1/2014; F16K1/2042; F16K1/205; F24F13/1426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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Cited
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Cited
US1000719A
Cited
US1142894A
Cited
US1180389A
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US1248926A
Cited
US1578872A
Cited
US1800323A
Cited
US2088571A
Cited
US2151296A
Cited
US2370584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-06 | 1959-08-08 | 1960-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-06 | 1963-08-08 | 1964-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-06 | 1967-08-08 | 1968-02-07 | $7700.00 | Window Closed / Lapsed |