Patent US2977966A successfully refreshed from Google Patents.
US2977966A
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Fluid pressure operated control devices
Assignee: Baso Inc
•
Filing: 1956-10-17
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Granted: 1961-04-04
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Expires: 1976-10-17
Abstract
No abstract record available.
Inventors
- 👤 Russell B Matthews
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:27
CPC Classifications
F; F23; F23N; F23N1/00; F23N1/007; G; G05; G05D; G05D16/00; G05D16/20; G05D16/2093; G05D16/2095; G05D23/00; G05D23/19; G05D23/1925; G05D23/20; G05D23/22; F23N2235/00; F23N2235/12; F23N2235/14; F23N2235/20; F23N2235/24; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516; Y10T137/7722; Y10T137/7758; Y10T137/7762; Y10T137/7764; Y10T137/7781; Y10T137/7782
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1546356A
Cited
US1800280A
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AT142312B
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US2265210A
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US2572175A
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US2412490A
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US2446718A
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FR953404A
Cited
US2687738A
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US2650617A
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US2877978A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |