Patent US2049146A successfully refreshed from Google Patents.
US2049146A
Expired / Lapsed
US
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Air conditioning apparatus
Assignee: Cooling & Air Conditioning Cor
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Filing: 1935-06-20
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Granted: 1936-07-28
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Expires: 1955-06-20
Abstract
No abstract record available.
Inventors
- 👤 Alfred B Wason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:37
CPC Classifications
F; F24; F24F; F24F11/00; F24F11/30; F24F11/32; F25; F25B; F25B2400/00; F25B2400/06; Y; Y10; Y10S; Y10S261/00; Y10S261/34
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) | 1939-07-28 | 1940-01-27 | 1940-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1943-07-28 | 1944-01-27 | 1944-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1947-07-28 | 1948-01-27 | 1948-07-28 | $7700.00 | Window Closed / Lapsed |