Patent US2486226A successfully refreshed from Google Patents.
US2486226A
Expired / Lapsed
US
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Air conditioning apparatus
Assignee: Individual
•
Filing: 1945-03-17
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Granted: 1949-10-25
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Expires: 1965-03-17
Abstract
No abstract record available.
Inventors
- 👤 Trask Allen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:54
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/02; F24F1/0328; F24F1/035; F24F1/022; F24F1/04; F24F8/00; F24F8/10; F24F8/108; F24F3/00; F24F3/12; F24F3/14; F24F2003/144; F24F2003/1446; F24F2003/1452; F24F2221/00; F24F2221/12; Y; Y10; Y10S; Y10S62/00; Y10S62/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1917537A
Cited
US2063646A
Cited
US1964845A
Cited
US2047169A
Cited
US2161667A
Cited
US2286491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |