US2392444A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange device
Assignee: GEN AIRCRAFT EQUIPMENT Inc
•
Filing: 1942-03-23
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Granted: 1946-01-08
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Expires: 1962-03-23
Abstract
No abstract record available.
Inventors
- 👤 Amand Raymond Henri
- 👤 Jean C Daninos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:26
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/12; F28D; F28D1/00; F28D1/02; F28D1/03; F28D1/0308; F28D1/0325; F28D1/0333; F28D1/0341; F28D9/00; F28D9/0031; F28D9/0043; F28D9/0056; F28F9/00; Y; Y10; Y10S; Y10S165/00; Y10S165/454; Y10S165/464
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1949-01-07 | 1949-07-09 | 1950-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-01-07 | 1953-07-09 | 1954-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-01-07 | 1957-07-09 | 1958-01-08 | $7700.00 | Window Closed / Lapsed |