US2744537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic pressure reducing cut off valve for fluid pressure line
Assignee: Individual
•
Filing: 1953-02-20
•
Granted: 1956-05-08
•
Expires: 1973-02-20
Abstract
No abstract record available.
Inventors
- 👤 Cyrus J Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:48
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/164; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7723; Y10T137/7729; Y10T137/7731; Y10T137/7733
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US821867A
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US1501331A
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DE343683C
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US1579951A
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US1724389A
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US1791980A
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US2071969A
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US2201523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-08 | 1959-11-07 | 1960-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-08 | 1963-11-07 | 1964-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-08 | 1967-11-07 | 1968-05-08 | $7700.00 | Window Closed / Lapsed |