Patent US2665707A successfully refreshed from Google Patents.
US2665707A
Expired / Lapsed
US
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Fluid pressure control apparatus
Assignee: Individual
•
Filing: 1951-03-13
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Granted: 1954-01-12
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Expires: 1971-03-13
Abstract
No abstract record available.
Inventors
- 👤 Stover Emory Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:46
CPC Classifications
G; G05; G05D; G05D7/00; G05D7/03; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2496; Y10T137/2514; Y10T137/7722; Y10T137/7758; Y10T137/7759
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1007521A
Cited
US965824A
Cited
US1585170A
Cited
US1515173A
Cited
US2035472A
Cited
US1987200A
Cited
US2430503A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-11 | 1957-07-13 | 1958-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-11 | 1961-07-13 | 1962-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-11 | 1965-07-13 | 1966-01-12 | $7700.00 | Window Closed / Lapsed |