US3320526A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low impedance measuring apparatus including a pair of multiple terminal networks and a voltage divider
Assignee: JULIE RES LAB Inc
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Filing: 1966-06-06
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Granted: 1967-05-16
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Expires: 1986-06-06
Abstract
No abstract record available.
Inventors
- 👤 Julie Loebe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:54
CPC Classifications
G; G01; G01R; G01R17/00; G01R17/10; G01R17/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
123 words
IN AN IMPEDANCE BRIDGE FOR MEASURING IMPEDANCES AND HAVING ELECTRICALLY INTERCONNECTED BRIDGE ARMS FORMING A CLOSED LOOP, THE COMBINATION INCLUDING SAID BRIDGE ARMS FOR EFFECTIVELY ISOLATING THE IMPEDANCE ELEMENT UNDER MEASUREMENT FROM SPURIOUS LEAD AND TERMINAL CONNECTION IMPEDANCES COMPRISING, FIRST MEANS IN A FIRST OF SAID BRIDGE ARMS FOR ELECTRICAL CONNECTION TO THE IMPEDANCE ELEMENT UNDER TEST, FIRST AND SECOND VOLTAGE DIVIDER MEANS FOR PROVIDING RESPECTIVE INPUT AND OUTPUT VOLTAGE CONNECTIONS IN A SECOND OF SAID BRIDGE ARMS, AN OUTPUT CONNECTION OF SAID FIRST VOLTAGE DIVIDER MEANS BEING ADJUSTABLE FOR PROVIDING A VARIABLE VOLTAGE, SECOND MEANS FOR CONNECTING SAID LAST-MENTIONED OUTPUT TO ONE INPUT SIDE OF SAID SECOND VOLTAGE DIVIDER MEANS, MEANS IN SAID SECOND BRIDGE ARM FOR EXTENDING THE RANGE OF IMPEDANCE
Claim 2
Dependent Claim
123 words
IN AN IMPEDANCE BRIDGE FOR MEASURING IMPEDANCES AND HAVING ELECTRICALLY INTERCONNECTED BRIDGE ARMS FORMING A CLOSED LOOP, THE COMBINATION INCLUDING SAID BRIDGE ARMS FOR EFFECTIVELY ISOLATING THE IMPEDANCE ELEMENT UNDER MEASUREMENT FROM SPURIOUS LEAD AND TERMINAL CONNECTION IMPEDANCES COMPRISING, FIRST MEANS IN A FIRST OF SAID BRIDGE ARMS FOR ELECTRICAL CONNECTION TO THE IMPEDANCE ELEMENT UNDER TEST, FIRST AND SECOND VOLTAGE DIVIDER MEANS FOR PROVIDING RESPECTIVE INPUT AND OUTPUT VOLTAGE CONNECTIONS IN A SECOND OF SAID BRIDGE ARMS, AN OUTPUT CONNECTION OF SAID FIRST VOLTAGE DIVIDER MEANS BEING ADJUSTABLE FOR PROVIDING A VARIABLE VOLTAGE, SECOND MEANS FOR CONNECTING SAID LAST-MENTIONED OUTPUT TO ONE INPUT SIDE OF SAID SECOND VOLTAGE DIVIDER MEANS, MEANS IN SAID SECOND BRIDGE ARM FOR EXTENDING THE RANGE OF IMPEDANCE
References Cited (Backward Citations)
US3179880A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-15 | 1970-11-14 | 1971-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-15 | 1974-11-14 | 1975-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-15 | 1978-11-14 | 1979-05-16 | $7700.00 | Window Closed / Lapsed |