Patent US2776670A successfully refreshed from Google Patents.
US2776670A
Expired / Lapsed
US
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Pressure fluid operated balanced control system
Assignee: Fisher Governor Co
•
Filing: 1951-09-29
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Granted: 1957-01-08
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Expires: 1971-09-29
Abstract
No abstract record available.
Inventors
- 👤 Verle J Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
G; G05; G05D; G05D9/00; G05D9/04; G05B; G05B6/00; G05B6/05; Y; Y10; Y10T; Y10T137/00; Y10T137/2278; Y10T137/2409; Y10T137/2452
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1220972A
Cited
US1988348A
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US2065702A
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US2285540A
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US2409871A
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GB536537A
Cited
GB544753A
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US2476104A
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US2356970A
Cited
US2512561A
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US2737964A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |