US2589573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetic reset valve
Assignee: General Controls Co
•
Filing: 1946-08-20
•
Granted: 1952-03-18
•
Expires: 1966-08-20
Abstract
No abstract record available.
Inventors
- 👤 William A Ray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:25
CPC Classifications
F; F23; F23N; F23N5/00; F23N5/02; F23N5/10; F23N5/107; Y; Y10; Y10T; Y10T137/00; Y10T137/1407; Y10T137/1516; Y10T137/8593; Y10T137/87056
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2188836A
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US2230771A
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US2297718A
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US2288417A
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US2299654A
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US2388696A
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US2402732A
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US2400861A
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US2422368A
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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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |