Patent US2775432A successfully refreshed from Google Patents.
US2775432A
Expired / Lapsed
US
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Apparatus for air conditioning
Assignee: JOHN J NESBITT Inc
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Filing: 1951-07-23
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Granted: 1956-12-25
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Expires: 1971-07-23
Abstract
No abstract record available.
Inventors
- 👤 John W Mcelgin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:45
CPC Classifications
F; F24; F24F; F24F1/00; Y; Y10; Y10S; Y10S165/00; Y10S165/228; Y10S165/302; Y10S165/311; Y10S165/312
Claims Analysis
Total Claims: 0
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US2477824A
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US2670935A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-25 | 1960-06-25 | 1960-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-25 | 1964-06-25 | 1964-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-25 | 1968-06-25 | 1968-12-25 | $7700.00 | Window Closed / Lapsed |