US3135932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Signal delay system
Assignee: AT&T Inc
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Filing: 1959-08-14
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Granted: 1964-06-02
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Expires: 1979-08-14
Abstract
No abstract record available.
Inventors
- 👤 John T Bangert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
H; H03; H03H; H03H7/00; H03H7/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A SYSTEM FOR PROVIDING A GIVEN DELAY CHARACTERISTIC OVER A RANGE OF FREQUENCIES COMPRISING MEANS FOR DIVIDING THE SIGNAL TO BE DELAYED INTO TWO FREQUENCY BANDS HAVING BANDS BY DIFFERENT CONSTANT AMOUNTS EACH OF WHICH IS APPROXIMATELY EQUAL TO THE MINIMUM REQUIRED DELAY IN THE PARTICULAR BAND, MEANS FOR MAKING THE DIFFERENCE BETWEEN THE PHASE SHIFTS IN THE BANDS APPROXIMATELY EQUAL TO AN INTEGRAL MULTIPLE OF 2$ RADIANS NEAR THE COMMON BOUNDARY, MEANS FOR RECOMBINIG THE BANDS, AND MEANS FOR INTRODUCING THE RESIDUAL DELAY REQUIRED TO PROVIDE THE GIVEN CHARACTERISTIC.
Claim 2
Independent Claim
90 words
A SYSTEM FOR PROVIDING A GIVEN DELAY CHARACTERISTIC OVER A RANGE OF FREQUENCIES COMPRISING MEANS FOR DIVIDING THE SIGNAL TO BE DELAYED INTO TWO FREQUENCY BANDS HAVING BANDS BY DIFFERENT CONSTANT AMOUNTS EACH OF WHICH IS APPROXIMATELY EQUAL TO THE MINIMUM REQUIRED DELAY IN THE PARTICULAR BAND, MEANS FOR MAKING THE DIFFERENCE BETWEEN THE PHASE SHIFTS IN THE BANDS APPROXIMATELY EQUAL TO AN INTEGRAL MULTIPLE OF 2$ RADIANS NEAR THE COMMON BOUNDARY, MEANS FOR RECOMBINIG THE BANDS, AND MEANS FOR INTRODUCING THE RESIDUAL DELAY REQUIRED TO PROVIDE THE GIVEN CHARACTERISTIC.
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) | 1967-06-02 | 1967-12-02 | 1968-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-02 | 1971-12-02 | 1972-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-02 | 1975-12-02 | 1976-06-02 | $7700.00 | Window Closed / Lapsed |