Patent US3004752A successfully refreshed from Google Patents.
US3004752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated automotive heating and air conditioning systems
Assignee: Motors Liquidation Co
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Filing: 1959-01-12
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Granted: 1961-10-17
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 Fred D Armes
- 👤 Philip S Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:26
CPC Classifications
B; B60; B60H; B60H1/00; B60H1/00007
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2264848A
Cited
US2801825A
Cited
US2807758A
Cited
US2752891A
Cited
US2865610A
Cited
US2917702A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |