US2503764A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan accelerated radiator cabinet
Assignee: TRADE WIND MOTORFANS Inc
•
Filing: 1945-02-17
•
Granted: 1950-04-11
•
Expires: 1965-02-17
Abstract
No abstract record available.
Inventors
- 👤 Oran W Ott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:24
CPC Classifications
F; F28; F28D; F28D1/00; F28D1/02; F28D1/0233; F28D1/024; Y; Y10; Y10S; Y10S165/00; Y10S165/092
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1040084A
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US1364894A
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US1600508A
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US1845243A
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US1830273A
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US2022333A
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US2191224A
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US2060289A
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US2135461A
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US2205716A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-10 | 1953-10-10 | 1954-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-10 | 1957-10-10 | 1958-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-10 | 1961-10-10 | 1962-04-11 | $7700.00 | Window Closed / Lapsed |