US2419266A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic circuit for indicating ice formation
Assignee: Honeywell Inc
•
Filing: 1942-10-24
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Granted: 1947-04-22
•
Expires: 1962-10-24
Abstract
No abstract record available.
Inventors
- 👤 Waldo H Kliever
- 👤 Richard M Franzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:36
CPC Classifications
B; B64; B64D; B64D15/00; B64D15/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2190488A
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US2127823A
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US2111786A
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US2237254A
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US2146073A
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US2217797A
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US2271292A
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US2316875A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-04-21 | 1950-10-21 | 1951-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-04-21 | 1954-10-21 | 1955-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-04-21 | 1958-10-21 | 1959-04-22 | $7700.00 | Window Closed / Lapsed |