US2662380A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic defrosting system for refrigeration machines
Assignee: FREZ O MAT CORP
•
Filing: 1951-02-06
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Granted: 1953-12-15
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Expires: 1971-02-06
Abstract
No abstract record available.
Inventors
- 👤 Sutton Myer Stephen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:26
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2126285A
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US2264545A
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US2281770A
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US2366635A
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US2433574A
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US2492970A
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US2446910A
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US2475841A
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US2463027A
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US2451682A
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US2554848A
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US2548324A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |