US2601466A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defroster circuit
Assignee: Avco Manufacturing Corp
•
Filing: 1950-06-20
•
Granted: 1952-06-24
•
Expires: 1970-06-20
Abstract
No abstract record available.
Inventors
- 👤 Benjamin D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:20
CPC Classifications
F; F25; F25D; F25D21/00; F25D21/002
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1913433A
Cited
US2081479A
Cited
US2244892A
Cited
US2313390A
Cited
US2400168A
Cited
US2495378A
Cited
US2551163A
Cited
US2522199A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-24 | 1955-12-24 | 1956-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-24 | 1959-12-24 | 1960-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-24 | 1963-12-24 | 1964-06-24 | $7700.00 | Window Closed / Lapsed |