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Patent US2621648A successfully refreshed from Google Patents.
US2621648A
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Defrosting device
Assignee: Individual
•
Filing: 1949-04-12
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Granted: 1952-12-16
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Expires: 1969-04-12
Abstract
No abstract record available.
Inventors
- 👤 Carfano Louis
- 👤 D Amico Carmen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:45
CPC Classifications
E; E05; E05B; E05B17/00; E05B17/0016; C; C09; C09K; C09K5/00; C09K5/16; F; F24; F24V; F24V30/00; Y; Y10; Y10T; Y10T70/00; Y10T70/80
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US197542A
Cited
US382191A
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US769615A
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US929842A
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US1624327A
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US1774505A
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US2051063A
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US2077703A
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US2289425A
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US2352951A
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US2381207A
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US2488611A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |