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US2560090A
Expired / Lapsed
US
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Snap action valve mechanism
Assignee: Individual
•
Filing: 1946-11-13
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Granted: 1951-07-10
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Expires: 1966-11-13
Abstract
No abstract record available.
Inventors
- 👤 Frank D Crow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:12
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/44; F16K31/56; F16K31/563; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18856; Y10T74/18864
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1158060A
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US1602871A
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US1493640A
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US1549193A
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US1679729A
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US1871044A
Cited
US2267688A
Cited
US2075548A
Cited
US2237174A
Cited
US2309043A
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US2402838A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-07-09 | 1955-01-08 | 1955-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-09 | 1959-01-08 | 1959-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-09 | 1963-01-08 | 1963-07-10 | $7700.00 | Window Closed / Lapsed |