US2468082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermistor circuit compensating for supply voltage fluctuations
Assignee: International Standard Electric Corp
•
Filing: 1943-08-16
•
Granted: 1949-04-26
•
Expires: 1963-08-16
Abstract
No abstract record available.
Inventors
- 👤 Chatterjea Prafulla Kumar
- 👤 Houghton Leslie Wilfred
- 👤 Scully Charles Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:15
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/52; H03F1/54
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1541311A
Cited
US1642526A
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US1996378A
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US1973123A
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US2032199A
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US2177847A
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US2111086A
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US2159802A
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US2122267A
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US2204962A
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US2186247A
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US2340443A
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US2228112A
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US2281205A
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US2250598A
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US2268872A
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US2367924A
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US2298192A
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US2394018A
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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) | 1952-04-25 | 1952-10-25 | 1953-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-04-25 | 1956-10-25 | 1957-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-04-25 | 1960-10-25 | 1961-04-26 | $7700.00 | Window Closed / Lapsed |