US3081434A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multibranch circuits for translating frequency characteristics
Assignee: AT&T Inc
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Filing: 1960-04-18
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Granted: 1963-03-12
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Expires: 1980-04-18
Abstract
No abstract record available.
Inventors
- 👤 Irwin W Sandberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:05
CPC Classifications
H; H03; H03H; H03H19/00; H03H19/002
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
94 words
A TIME-VARYING NETWORK COMPRISING AT LEAST THREE INPUT MODULATORS, AT LEAST THREE OUTPUT MODULATORS, A TWO-PORT LINEAR TRANSDUCER CONNECTED BETWEEN EACH OF SAID INPUT MODULATORS AND A CORRESPONDING ONE OF SAID OUTPUT MODULATORS, A SOURCE OF MODULATING SIGNALS, MEANS FOR DELAYING MODULATING SIGNALS FROM SAID SOURCE IN SUCCESSIVE EQUAL TIME INCREMENTS, MEANS FOR APPLYING EACH OF SAID SUCCESSIVELY DELAYED MODULATING SIGNALS TO A DIFFERENT INPUT MODULATOR AND CORRESPONDING OUTPUT MODULATOR, MEANS FOR APPLYING AN INPUT SIGNAL TO EACH OF SAID INPUT MODULATORS AND MEANS FOR COMBINING THE OUTPUTS FROM ALL OF SAID OUTPUT MODULATORS.
Claim 2
Dependent Claim
94 words
A TIME-VARYING NETWORK COMPRISING AT LEAST THREE INPUT MODULATORS, AT LEAST THREE OUTPUT MODULATORS, A TWO-PORT LINEAR TRANSDUCER CONNECTED BETWEEN EACH OF SAID INPUT MODULATORS AND A CORRESPONDING ONE OF SAID OUTPUT MODULATORS, A SOURCE OF MODULATING SIGNALS, MEANS FOR DELAYING MODULATING SIGNALS FROM SAID SOURCE IN SUCCESSIVE EQUAL TIME INCREMENTS, MEANS FOR APPLYING EACH OF SAID SUCCESSIVELY DELAYED MODULATING SIGNALS TO A DIFFERENT INPUT MODULATOR AND CORRESPONDING OUTPUT MODULATOR, MEANS FOR APPLYING AN INPUT SIGNAL TO EACH OF SAID INPUT MODULATORS AND MEANS FOR COMBINING THE OUTPUTS FROM ALL OF SAID OUTPUT MODULATORS.
Claim 3
Dependent Claim
65 words
A TIME-VARYING SINGLE-PORT NETWORK COMPRISING N INPUT PRODUCT MODULATORS AND N OUTPUT PRODUCT MODULATORS, SAID MODULATORS ARRANGED IN PAIRS WITH THE INPUT TERMINALS OF EACH INPUT MODULATOR AND THE OUTPUT TERMINALS OF EACH OUTPUT MODULATOR COUPLED TO A COMMON POINT, A TWO-PORT LINEAR NETWORK COUPLED BETWEEN THE OUTPUT TERMINALS OF EACH OF SAID INPUT MODULATORS AND THE INPUT TERMINALS OF THE PAIRED OUTPUT MODULATOR, A
Claim 4
Dependent Claim
65 words
A TIME-VARYING SINGLE-PORT NETWORK COMPRISING N INPUT PRODUCT MODULATORS AND N OUTPUT PRODUCT MODULATORS, SAID MODULATORS ARRANGED IN PAIRS WITH THE INPUT TERMINALS OF EACH INPUT MODULATOR AND THE OUTPUT TERMINALS OF EACH OUTPUT MODULATOR COUPLED TO A COMMON POINT, A TWO-PORT LINEAR NETWORK COUPLED BETWEEN THE OUTPUT TERMINALS OF EACH OF SAID INPUT MODULATORS AND THE INPUT TERMINALS OF THE PAIRED OUTPUT MODULATOR, A
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |