US2676781A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double fluid seal valve
Assignee: Individual
•
Filing: 1948-06-12
•
Granted: 1954-04-27
•
Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 Hobbs James Clarence
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:04
CPC Classifications
F; F16; F16L; F16L19/00; F16L19/02; F16L19/0212; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; F16J15/185; F16J15/186; F16K; F16K1/00; F16K1/32; F16K1/34; F16K1/36; F16K1/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US75670A
Cited
US405404A
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US1185542A
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US1371575A
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US1658810A
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US1779893A
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US1910070A
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FR700958A
Cited
US1863712A
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US1937204A
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GB525241A
Cited
US2300030A
Cited
US2283672A
Cited
US2297535A
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US2330864A
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US2342834A
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US2389118A
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US2356987A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |