Patent US2771750A successfully refreshed from Google Patents.
US2771750A
Expired / Lapsed
US
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Package air conditioning unit for automotive vehicle
Assignee: Houdaille Industries Inc
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Filing: 1954-04-12
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Granted: 1956-11-27
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Expires: 1974-04-12
Abstract
No abstract record available.
Inventors
- 👤 Oldberg Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:43
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/32; B60H1/3204; B60H1/3229; B60H1/00007; B60H1/00207; B60H2001/00242
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1973116A
Cited
US2294036A
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US2480510A
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US2559009A
Cited
US2479170A
Cited
US2626509A
Cited
US2667042A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-11-27 | 1960-05-28 | 1960-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-11-27 | 1964-05-28 | 1964-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-11-27 | 1968-05-28 | 1968-11-27 | $7700.00 | Window Closed / Lapsed |