US2794331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling unit for absorption refrigeration apparatus
Assignee: Electrolux AB
•
Filing: 1954-09-20
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Granted: 1957-06-04
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Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Kogel Wilhelm Georg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:49
CPC Classifications
F; F25; F25D; F25D11/00; F25B; F25B15/00; F25B15/10; F25D11/02; F25D11/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1957955A
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US1910853A
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US1823456A
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US2008343A
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US2267283A
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US2334803A
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US2425119A
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US2489752A
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US2635436A
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US2635438A
Cited
US2645908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-06-03 | 1960-12-03 | 1961-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-03 | 1964-12-03 | 1965-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-03 | 1968-12-03 | 1969-06-04 | $7700.00 | Window Closed / Lapsed |