US3051847A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor switching circuit with thermistor biasing means
Assignee: ACF Industries Inc
•
Filing: 1957-03-15
•
Granted: 1962-08-28
•
Expires: 1977-03-15
Abstract
No abstract record available.
Inventors
- 👤 Edward H Niemeyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:02
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2757243A
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US2761916A
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US2866017A
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US2955257A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-27 | 1966-02-26 | 1966-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-27 | 1970-02-26 | 1970-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-27 | 1974-02-26 | 1974-08-28 | $7700.00 | Window Closed / Lapsed |