Patent US2977774A successfully refreshed from Google Patents.
US2977774A
Expired / Lapsed
US
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Air conditioning unit for motor vehicles
Assignee: Kysor Heater Co
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Filing: 1959-03-23
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Granted: 1961-04-04
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Expires: 1979-03-23
Abstract
No abstract record available.
Inventors
- 👤 David R Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:07
CPC Classifications
F; F24; F24F; F24F1/00; B; B60; B60H; B60H1/00; B60H1/00357; B60H1/00378; B60H1/00007; B60H1/00207; B60H2001/00235
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE21503E
Cited
USRE24745E
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US2344864A
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US2696084A
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US2799143A
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US2869333A
Cited
US2895313A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |