US2806361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conditioner
Assignee: McGraw Edison Co
•
Filing: 1953-04-06
•
Granted: 1957-09-17
•
Expires: 1973-04-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Kline
- 👤 Wendell H Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 06:32
CPC Classifications
F; F24; F24F; F24F1/00; F24F1/02; F24F1/022; F24F1/027; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316
Claims Analysis
Total Claims: 0
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US2297283A
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US2408972A
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US2485733A
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US2526391A
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US2660866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-09-16 | 1961-03-18 | 1961-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-16 | 1965-03-18 | 1965-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-16 | 1969-03-18 | 1969-09-17 | $7700.00 | Window Closed / Lapsed |