US2674665A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clock initiated defroster control for mechanical refrigerators
Assignee: Robertshaw US Holding Corp
•
Filing: 1951-06-14
•
Granted: 1954-04-06
•
Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Estel C Raney
- 👤 Liebermann John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:58
CPC Classifications
G; G04; G04C; G04C23/00; G04C23/14; G04C23/16; F; F25; F25D; F25D21/00; F25D21/002; F25D21/008; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2101
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |