Patent US2673707A successfully refreshed from Google Patents.
US2673707A
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US
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Safety cutoff valve having bellows controlled trip
Assignee: Individual
•
Filing: 1949-07-05
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Granted: 1954-03-30
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Expires: 1969-07-05
Abstract
No abstract record available.
Inventors
- 👤 Fred W Mcrae
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:25
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/386; F16K17/40; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/1632; Y10T137/1797; Y10T137/1819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US341902A
Cited
US1619500A
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US1643753A
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US1727503A
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US1897678A
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US2324552A
Cited
US2296648A
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US2400372A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |