US2522313A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermostatic control for air motors
Assignee: Vapor Heating Corp
•
Filing: 1946-07-26
•
Granted: 1950-09-12
•
Expires: 1966-07-26
Abstract
No abstract record available.
Inventors
- 👤 William M Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:45
CPC Classifications
F; F01; F01B; F01B17/00; F01B17/02; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1925; G05D23/275
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1231257A
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US1378927A
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US1756688A
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US2006658A
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US1977538A
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US2168599A
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GB436557A
Cited
US2365223A
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US2353692A
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US2333066A
Cited
US2364659A
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US2394708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-09-11 | 1954-03-13 | 1954-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-09-11 | 1958-03-13 | 1958-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-09-11 | 1962-03-13 | 1962-09-12 | $7700.00 | Window Closed / Lapsed |