Patent US2615461A successfully refreshed from Google Patents.
US2615461A
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US
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Automatic fire and earthquake responsive cutoff valve
Assignee: Individual
•
Filing: 1950-03-09
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Granted: 1952-10-28
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Expires: 1970-03-09
Abstract
No abstract record available.
Inventors
- 👤 Crow William Willis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:08
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/36; F16K17/38; F16K17/383; F16K17/366; Y; Y10; Y10T; Y10T137/00; Y10T137/0753; Y10T137/0777; Y10T137/1624; Y10T137/1797; Y10T137/1804; Y10T137/1819
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US432404A
Cited
US704529A
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US855416A
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US1302749A
Cited
US1742685A
Cited
US1743314A
Cited
US2229543A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-28 | 1956-04-28 | 1956-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-28 | 1960-04-28 | 1960-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-28 | 1964-04-28 | 1964-10-28 | $7700.00 | Window Closed / Lapsed |