US2996074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid pressure actuated shut-off valve
Assignee: Individual
•
Filing: 1954-03-01
•
Granted: 1961-08-15
•
Expires: 1974-03-01
Abstract
No abstract record available.
Inventors
- 👤 John S Page
- 👤 Jr John S Page
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:51
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/12; F16K31/36; F16K31/363; F16K1/00; F16K1/12; F16K1/123; F16K1/126; Y; Y10; Y10T; Y10T137/00; Y10T137/3367; Y10T137/3421
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US614441A
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US615881A
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US694811A
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US1755536A
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US1884179A
Cited
FR850567A
Cited
FR969077A
Cited
US2601989A
Cited
US2679261A
Cited
DE859245C
Cited
US2725891A
Cited
FR1054190A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-14 | 1965-02-13 | 1965-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-14 | 1969-02-13 | 1969-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-14 | 1973-02-13 | 1973-08-15 | $7700.00 | Window Closed / Lapsed |