Patent US2981477A successfully refreshed from Google Patents.
US2981477A
Expired / Lapsed
US
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Thermostat valve
Assignee: Flexonics Corp
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Filing: 1958-10-06
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Granted: 1961-04-25
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Clarence P Salmon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:45
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/02; G05D23/021; G05D23/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1246355A
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US1475313A
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US1707891A
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US2584877A
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US2636776A
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US2797873A
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US2777638A
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US2811313A
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US2786633A
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US2842318A
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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 |