US2672021A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defrosting refrigerating apparatus
Assignee: Motors Liquidation Co
•
Filing: 1951-04-28
•
Granted: 1954-03-16
•
Expires: 1971-04-28
Abstract
No abstract record available.
Inventors
- 👤 Francis I Rataiczak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:14
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/002; F25D21/008; F25D11/00; F25D11/02; F25D11/025; F25B; F25B2700/00; F25B2700/21; F25B2700/2117; F25D2400/00; F25D2400/04; Y; Y10; Y10S; Y10S62/00; Y10S62/13
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913433A
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US2033554A
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US2036565A
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US2293360A
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US2301313A
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US2285701A
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US2313390A
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US2292405A
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US2487182A
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US2601466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |