US3250083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frost sensing device
Assignee: Controls Company of America
•
Filing: 1964-06-10
•
Granted: 1966-05-10
•
Expires: 1984-06-10
Abstract
No abstract record available.
Inventors
- 👤 Charles D Orth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:00
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USRE18263E
Cited
US2739454A
Cited
US2744389A
Cited
US2778198A
Cited
US2829505A
Cited
US3107499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-09 | 1969-11-08 | 1970-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-09 | 1973-11-08 | 1974-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-09 | 1977-11-08 | 1978-05-10 | $7700.00 | Window Closed / Lapsed |