US2630818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature released check valve
Assignee: Individual
•
Filing: 1947-04-24
•
Granted: 1953-03-10
•
Expires: 1967-04-24
Abstract
No abstract record available.
Inventors
- 👤 Fred W Mcrae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:29
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/386; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1797; Y10T137/1819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US226059A
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US496045A
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US709262A
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US1620876A
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US1603123A
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US1742043A
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US1746801A
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US1897678A
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US1892921A
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US2282532A
Cited
US2327055A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-03-09 | 1956-09-08 | 1957-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-09 | 1960-09-08 | 1961-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-09 | 1964-09-08 | 1965-03-10 | $7700.00 | Window Closed / Lapsed |