US2981475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve
Assignee: Flexonics Corp
•
Filing: 1956-06-07
•
Granted: 1961-04-25
•
Expires: 1976-06-07
Abstract
No abstract record available.
Inventors
- 👤 Clarence P Salmon
- 👤 James W Farmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:02
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/022; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7737
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1246355A
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US1916814A
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US1928678A
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US2040435A
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US2136908A
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US2265586A
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US2479034A
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US2578958A
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US2768633A
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US2777638A
Cited
US2842318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |