US2666299A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerator defrosting control
Assignee: U S THERMO CONTROL CO
•
Filing: 1950-04-08
•
Granted: 1954-01-19
•
Expires: 1970-04-08
Abstract
No abstract record available.
Inventors
- 👤 Myer S Sutton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:25
CPC Classifications
F; F25; F25B; F25B47/00; F25B47/02; F25B47/022
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913433A
Cited
US2081479A
Cited
US2313390A
Cited
US2333432A
Cited
US2551163A
Cited
US2451682A
Cited
US2525560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-18 | 1957-07-20 | 1958-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-18 | 1961-07-20 | 1962-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-18 | 1965-07-20 | 1966-01-19 | $7700.00 | Window Closed / Lapsed |