US2654227A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Room cooling and heating system
Assignee: Individual
•
Filing: 1948-08-20
•
Granted: 1953-10-06
•
Expires: 1968-08-20
Abstract
No abstract record available.
Inventors
- 👤 Muffly Glenn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:57
CPC Classifications
F; F25; F25B; F25B13/00; F24; F24F; F24F1/00; F24F1/02; F24F1/022; F24F1/027; F24F1/028; F24F1/0284; F24F1/03; F24F1/0314; F24F1/0328; F24F1/035; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87169; Y10T137/87217; Y10T137/87265; Y10T137/87338; Y10T137/87362
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2342566A
Cited
US1324713A
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US2289035A
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US1309724A
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US2029610A
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US2036851A
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US2048911A
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US2145909A
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US2081107A
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US2296635A
Cited
US2342174A
Cited
US2333374A
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US2351140A
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US2343122A
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US2388734A
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US2388314A
Cited
US2380586A
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US2433104A
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US2474304A
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US2493123A
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US2485733A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-05 | 1957-04-06 | 1957-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-05 | 1961-04-06 | 1961-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-05 | 1965-04-06 | 1965-10-06 | $7700.00 | Window Closed / Lapsed |