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US2750465A
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Fluid pressure operated control
Assignee: Individual
•
Filing: 1951-02-20
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Granted: 1956-06-12
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Expires: 1971-02-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph W Yowell
- 👤 Donald B Miner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:10
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/34; F; F02; F02M; F02M37/00; F02M37/04; F02M37/08; H01H35/26; H01H35/2607
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1387746A
Cited
US1414912A
Cited
US1670313A
Cited
US1704370A
Cited
US1847086A
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US1567592A
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US1719851A
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US1936051A
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US2213505A
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US2226297A
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US2348113A
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US2283175A
Cited
US2335943A
Cited
US2333401A
Cited
US2409931A
Cited
US2376144A
Cited
US2463891A
Cited
US2487213A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |