US3252091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Four-terminal junction for electrical measurments and method of making the same
Assignee: Electro Scientific Industries Inc
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Filing: 1961-12-08
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Granted: 1966-05-17
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Expires: 1981-12-08
Abstract
No abstract record available.
Inventors
- 👤 Merle L Morgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:59
CPC Classifications
H; H01; H01R; H01R9/00; G; G01; G01R; G01R11/00; G01R11/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49004; Y10T29/49117; Y10T29/49204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A FOUR-TERMINAL JUNCTION FOR ELECTRICAL MEASUREMENTS, COMPRISING AN ELECTRICALLY CONDUCTIVE BASE MEMBER HAVING A SINGLE PLANE OF SYMMETRY, A FIRST PAIR OF SPACED TERMINALS ENGAGING THE BASE MEMBER ON SAID PLANE, AND A SECOND PAIR OF SPACED TERMINALS ENGAGING THE BASE MEMBER SYMMETRICALLY ON OPPOSITE SIDES OF SAID PLANE, THE ASSEMBLY OF BASE AND TERMINALS HAVING MIRROR SYMMETRY WITH RESPECT TO SAID SINGLE PLANE, THE TERMINALS OF THE FIRST AND SECOND PAIR BEING POSITIONED RELATIVE TO EACH OTHER IN SUCH MANNER THAT AN ELECTRIC CURRENT APPLIED THROUGH ONE TERMINAL OF EACH PAIR PRODUCES SUBSTANTIALLY NO VOLTAGE BETWEEN THE REMAINING TWO TERMINALS.
Claim 2
Dependent Claim
101 words
A FOUR-TERMINAL JUNCTION FOR ELECTRICAL MEASUREMENTS, COMPRISING AN ELECTRICALLY CONDUCTIVE BASE MEMBER HAVING A SINGLE PLANE OF SYMMETRY, A FIRST PAIR OF SPACED TERMINALS ENGAGING THE BASE MEMBER ON SAID PLANE, AND A SECOND PAIR OF SPACED TERMINALS ENGAGING THE BASE MEMBER SYMMETRICALLY ON OPPOSITE SIDES OF SAID PLANE, THE ASSEMBLY OF BASE AND TERMINALS HAVING MIRROR SYMMETRY WITH RESPECT TO SAID SINGLE PLANE, THE TERMINALS OF THE FIRST AND SECOND PAIR BEING POSITIONED RELATIVE TO EACH OTHER IN SUCH MANNER THAT AN ELECTRIC CURRENT APPLIED THROUGH ONE TERMINAL OF EACH PAIR PRODUCES SUBSTANTIALLY NO VOLTAGE BETWEEN THE REMAINING TWO TERMINALS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-16 | 1969-11-15 | 1970-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-16 | 1973-11-15 | 1974-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-16 | 1977-11-15 | 1978-05-17 | $7700.00 | Window Closed / Lapsed |