US2737929A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pilot control mechanism for hydraulic apparatus
Assignee: Denison Engineering Co
•
Filing: 1952-02-06
•
Granted: 1956-03-13
•
Expires: 1972-02-06
Abstract
No abstract record available.
Inventors
- 👤 Cecil E Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:03
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08; F15B9/12; Y; Y10; Y10T; Y10T137/00; Y10T137/0971
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US109013A
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US603038A
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US1119324A
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US1749569A
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US1886975A
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US2331218A
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US2516842A
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US2622532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |