US2537431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerator alarm system
Assignee: Motors Liquidation Co
•
Filing: 1946-11-19
•
Granted: 1951-01-09
•
Expires: 1966-11-19
Abstract
No abstract record available.
Inventors
- 👤 Carl A Stickel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:11
CPC Classifications
H; H05; H05B; H05B1/00; H05B1/02; H05B1/0202; H05B1/0208; F; F25; F25D; F25D29/00; F25D29/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1066731A
Cited
US2115027A
Cited
US1969304A
Cited
US2092085A
Cited
US2447894A
Cited
US2447893A
Cited
US2447895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |