US3566261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Kelvin-type bridge including multistage voltage dividers
Assignee: I ELECTRO RESISTANCE SOC FR DE
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Filing: 1968-10-28
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Granted: 1971-02-23
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Expires: 1988-10-28
Abstract
Abstract A KELVIN-TYPE BRIDGE FOR MEASURING THE RATIO BETWEEN THE RESISTANCE VALUES OF TWO RESISTORS WHICH COMPRISES A MAIN AND AN AUXILIARY THREE-TERMINAL MULTISTAGE VOLTAGE DIVIDER, THE OUTPUT SLIDERS OF WHICH ARE CONNECTED THROUGH A NULL INDICATOR. THE SLIDERS OF THE CORRESPONDING STAGES OF THE DIVIDERS ARE CONTROLLED BY MEANS OF A SINGLE KNOOB. THE DIVIDERS ARE PREFERABLY MADE UP OOF RESISTORS OF IDENTICAL OHMIC VALUE IN ALL STAGES. THE VALUE OF THE RATIO IS READ DIRECTLY FROM THE KNOB DIALS WHEN THE DOUBLE BRIDGE IS BALANCED AS SHOWN BY THE NULL INDICATOR.
Inventors
- 👤 Robert Fenelon
- 👤 Roger Scursoglio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:33
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/10; G01R17/105
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |