Patent US2867092A successfully refreshed from Google Patents.
US2867092A
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US
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Automatic defrost control
Assignee: Hupp Corp
•
Filing: 1954-08-26
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Granted: 1959-01-06
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Expires: 1974-08-26
Abstract
No abstract record available.
Inventors
- 👤 Robert P Perry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:46
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1782651A
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US2022469A
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US2147867A
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US2632303A
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US2531136A
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US2666298A
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US2618934A
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US2624180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |