US2552396A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Forced air cooling apparatus
Assignee: Individual
•
Filing: 1949-05-18
•
Granted: 1951-05-08
•
Expires: 1969-05-18
Abstract
No abstract record available.
Inventors
- 👤 August J Brandecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:11
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1827410A
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US2111133A
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US2181635A
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US2318393A
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US2243958A
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US2369511A
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US2451903A
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US2460150A
Cited
US2526243A
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US2454654A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |