US3150326A
Expired / Lapsed
US
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Variolosser circuits having identical frequency selectivity at all loss settings
Assignee: AT&T Inc
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Filing: 1961-03-09
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Granted: 1964-09-22
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Expires: 1981-03-09
Abstract
No abstract record available.
Inventors
- 👤 Francis J Witt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:23
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/62; H04B1/64; H03; H03G; H03G1/00; H03G1/0005; H03G1/0035; H03G1/0052
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A VARIOLOSSER NETWORK COMPRISING, IN COMBINATION, AN INPUT CIRCUT HAVING A FIRST PLURALITY OF INTERCONNECTED CIRCUIT ELEMENTS INCLUDING AT LEAST ONE REACTIVE ELEMENT OF A FIRST KIND, AN OUTPUT CIRCUIT HAVING A SECOND PLURALITY OF INTERCONNECTED CIRCUIT ELEMENTS INCLUDING AT LEAST ONE REACTIVE ELEMENT OF AN OPPOSITE KIND, AND MEANS COMPRISING A VARIABLE RESISTANCE INTERCONNECTING SAID INPUT AND OUTPUT CIRCUITS, SAID INPUT AND OUTPUT CIRCUITS BEING COMPLEMENTARY AS VIEWED FROM SAID INTERCONNECTING MEANS, THEREBY RENDERING THE OVER-ALL FREQUENCY RESPONSE OF SAID NETWORK INVARIANT WITH RESPECT TO THE MAGNITUDE OF SAID VARIABLE RESISTANCE.
Claim 2
Dependent Claim
92 words
A VARIOLOSSER NETWORK COMPRISING, IN COMBINATION, AN INPUT CIRCUT HAVING A FIRST PLURALITY OF INTERCONNECTED CIRCUIT ELEMENTS INCLUDING AT LEAST ONE REACTIVE ELEMENT OF A FIRST KIND, AN OUTPUT CIRCUIT HAVING A SECOND PLURALITY OF INTERCONNECTED CIRCUIT ELEMENTS INCLUDING AT LEAST ONE REACTIVE ELEMENT OF AN OPPOSITE KIND, AND MEANS COMPRISING A VARIABLE RESISTANCE INTERCONNECTING SAID INPUT AND OUTPUT CIRCUITS, SAID INPUT AND OUTPUT CIRCUITS BEING COMPLEMENTARY AS VIEWED FROM SAID INTERCONNECTING MEANS, THEREBY RENDERING THE OVER-ALL FREQUENCY RESPONSE OF SAID NETWORK INVARIANT WITH RESPECT TO THE MAGNITUDE OF SAID VARIABLE RESISTANCE.
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) | 1967-09-22 | 1968-03-23 | 1968-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-22 | 1972-03-23 | 1972-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-22 | 1976-03-23 | 1976-09-22 | $7700.00 | Window Closed / Lapsed |