Patent US2239036A successfully refreshed from Google Patents.
Patent US2133039A successfully refreshed from Google Patents.
US2133039A
Expired / Lapsed
US
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Air conditioning system
Assignee: American Motors Corp
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Filing: 1934-09-01
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Granted: 1938-10-11
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Expires: 1954-09-01
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Philipp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:22
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/12; F24F3/14
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) | 1941-10-10 | 1942-04-11 | 1942-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-10-10 | 1946-04-11 | 1946-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-10-10 | 1950-04-11 | 1950-10-11 | $7700.00 | Window Closed / Lapsed |