Patent US5932940A successfully refreshed from Google Patents.
US2581964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling system for air supplied to compartments of aircraft
Assignee: Garrett Corp
•
Filing: 1945-03-16
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Granted: 1952-01-08
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Expires: 1965-03-16
Abstract
No abstract record available.
Inventors
- 👤 Waldemar F Mayer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:46
CPC Classifications
B; B64; B64D; B64D13/00; B64D13/06; B64D13/08; F; F28; F28D; F28D7/00; F28D7/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2391838A
Cited
GB190823529A
Cited
US2085761A
Cited
US2162956A
Cited
US2304151A
Cited
US2367223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-07 | 1955-07-09 | 1956-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-07 | 1959-07-09 | 1960-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-07 | 1963-07-09 | 1964-01-08 | $7700.00 | Window Closed / Lapsed |