US3264584A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adjustable impedance matching transformers
Assignee: AT&T Inc
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Filing: 1961-11-15
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Granted: 1966-08-02
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Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 Charles F Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:44
CPC Classifications
H; H01; H01P; H01P5/00; H01P5/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
IN COMBINATION, A PLURALITY OF VARIABLE REACTANCES, MEANS FOR CONNECTING A FIRST VARIABLE REACTANCE X1 BETWEEN A FIRST TERMINAL AND A FIRST COMMON JUNCTION, MEANS FOR CONNECTING A SECOND VARIABLE REACTANCE X2 BETWEEN AND FIRST COMMON JUNCTION AND A SECOND JUNCTION, MEANS FOR CONNECTING A THIRD VARIABLE REACTANCE X3 BETWEEN SAID FIRST COMMON JUNCTION AND A SECOND TERMINAL WHERE X1=X3=-X2, INPUT MEANS CONNECTED BETWEEN SAID FIRST TERMINAL AND SAID SECOND COMMON JUNCTION, OUTPUT MEANS CONNECTED BETWEEN SAID SECOND TERMINAL AND SAID SECOND COMMON JUNCTION, AND A SINGLE MEANS FOR ADJUSTING ALL OF SAID REACTANCES SIMULTANEOSULY WHILE MAINTAINING THE RELATION X1=X3=-X2.
Claim 2
Dependent Claim
100 words
IN COMBINATION, A PLURALITY OF VARIABLE REACTANCES, MEANS FOR CONNECTING A FIRST VARIABLE REACTANCE X1 BETWEEN A FIRST TERMINAL AND A FIRST COMMON JUNCTION, MEANS FOR CONNECTING A SECOND VARIABLE REACTANCE X2 BETWEEN AND FIRST COMMON JUNCTION AND A SECOND JUNCTION, MEANS FOR CONNECTING A THIRD VARIABLE REACTANCE X3 BETWEEN SAID FIRST COMMON JUNCTION AND A SECOND TERMINAL WHERE X1=X3=-X2, INPUT MEANS CONNECTED BETWEEN SAID FIRST TERMINAL AND SAID SECOND COMMON JUNCTION, OUTPUT MEANS CONNECTED BETWEEN SAID SECOND TERMINAL AND SAID SECOND COMMON JUNCTION, AND A SINGLE MEANS FOR ADJUSTING ALL OF SAID REACTANCES SIMULTANEOSULY WHILE MAINTAINING THE RELATION X1=X3=-X2.
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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) | 1969-08-01 | 1970-01-31 | 1970-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-01 | 1974-01-31 | 1974-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-01 | 1978-01-31 | 1978-08-02 | $7700.00 | Window Closed / Lapsed |