US2774564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electromagnetically operated controller for valves or the like
Assignee: General Controls Co
•
Filing: 1951-05-24
•
Granted: 1956-12-18
•
Expires: 1971-05-24
Abstract
No abstract record available.
Inventors
- 👤 Laurence C Biggle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 05:30
CPC Classifications
G; G01; G01L; G01L9/00; G01L9/10; G01L19/00; G01L19/08; G01L19/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US300068A
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US368674A
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US1177718A
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GB350487A
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US2292477A
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US2274917A
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US2391692A
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US2381080A
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US2562631A
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US2570450A
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US2519093A
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US2526685A
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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) | 1959-12-18 | 1960-06-18 | 1960-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-18 | 1964-06-18 | 1964-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-18 | 1968-06-18 | 1968-12-18 | $7700.00 | Window Closed / Lapsed |