Patent US1668245A successfully refreshed from Google Patents.
Patent US2673512A successfully refreshed from Google Patents.
US2673512A
Expired / Lapsed
US
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Air conditioning apparatus
Assignee: Motors Liquidation Co
•
Filing: 1948-09-17
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Granted: 1954-03-30
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Expires: 1968-09-17
Abstract
No abstract record available.
Inventors
- 👤 Charles F Henney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:17
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00371; B60H1/00007; B60H1/00207; B60H2001/00235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US489910A
Cited
US510001A
Cited
US402386A
Cited
US986731A
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GB294339A
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US2060251A
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USRE20178E
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US1915380A
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US1853459A
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US2089799A
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US2080757A
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US2188775A
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US2179873A
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US2266986A
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US2320596A
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US2370886A
Cited
US2463255A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-29 | 1957-09-28 | 1958-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-29 | 1961-09-28 | 1962-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-29 | 1965-09-28 | 1966-03-30 | $7700.00 | Window Closed / Lapsed |