US2940277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defrosting system for a refrigerator
Assignee: Motors Liquidation Co
•
Filing: 1956-11-19
•
Granted: 1960-06-14
•
Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Pas John
- 👤 Edward C Simmons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:56
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/002; F25D21/008; F25B; F25B2700/00; F25B2700/21; F25B2700/2117; F25D2400/00; F25D2400/04; F25D2700/00; F25D2700/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2736173A
Cited
US2538638A
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US2627561A
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US2672021A
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US2749717A
Cited
US2780925A
Cited
US2810267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |