US2669848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic refrigerating defrosting control
Assignee: Individual
•
Filing: 1952-10-21
•
Granted: 1954-02-23
•
Expires: 1972-10-21
Abstract
No abstract record available.
Inventors
- 👤 Fujii Minoru
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:00
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/02
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1276589A
Cited
US2077839A
Cited
US2069782A
Cited
US2104219A
Cited
US2143687A
Cited
US2178200A
Cited
US2375859A
Cited
US2377926A
Cited
US2377782A
Cited
US2541145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |