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US2798366A
Expired / Lapsed
US
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Widespread air circulating refrigerating unit
Assignee: REFRIGERATION APPLIANCES Inc
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Filing: 1954-04-15
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Granted: 1957-07-09
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Expires: 1974-04-15
Abstract
No abstract record available.
Inventors
- 👤 Edward J Erl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:05
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/067
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2211568A
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US2042420A
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US2250612A
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US2341962A
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US2457939A
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US2560453A
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US2495351A
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US2523957A
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US2655092A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |