Patent US2654580A successfully refreshed from Google Patents.
US2654580A
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US
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Temperature control of air supply systems
Assignee: AV Roe Canada Ltd
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Filing: 1950-06-22
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Granted: 1953-10-06
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Expires: 1970-06-22
Abstract
No abstract record available.
Inventors
- 👤 Shaw George Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:46
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/01; G05D23/13; G05D23/1393; F; F24; F24F; F24F11/00; F24F11/70; F24F11/80; F24F11/81; Y; Y10; Y10S; Y10S116/00; Y10S116/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US825706A
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US2063477A
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US2401861A
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US2507044A
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US2412071A
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US2459000A
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US2509899A
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US2474441A
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US2562918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |