Patent US3155773A successfully refreshed from Google Patents.
US3155773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for synchronously detecting signals in the presence of noise
Assignee: National Research Development Corp UK
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Filing: 1961-03-02
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Granted: 1964-11-03
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Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 Robin Harold Kilner
- 👤 Murray Thomas Lloyd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:29
CPC Classifications
H; H04; H04L; H04L7/00; H04L7/04; H04L7/08; H04L7/041; H04L2007/047; H04L7/02; H04L7/033; H04L7/0331
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A RECEIVER SYNCHRONISING SYSTEM FOR A RECEIVER ARRANGED TO RECEIVE A SIGNAL TRAIN HAVING A PREDETERMINED WHOLE NUMBER OF CYCLES OF A SYNCHRONISING TONE INSERTED AT REGULAR INTERVALS CORRESPONDING TO AN EVEN WHOLE NUMBER (2N) OF CYCLES OF THE SYNCHRONISING TONE AND INCLUDING A COHERENT OSCILLATOR CONNECTED TO RECEIVE THE SIGNAL TRAIN AND TUNED FOR SYNCHRONISATION WITH THE SAID SYNCHRONISING TONE, PHASE REVERSER MEANS FOR REVERSING THE PHASE OF SIGNALS DERIVED FROM THE COHERENT OSCILLATOR ONCE EVERY N CYCLES OF OSCILLATION OF THE COHERENT OSCILLATOR, A COHERENT
Claim 2
Dependent Claim
87 words
A RECEIVER SYNCHRONISING SYSTEM FOR A RECEIVER ARRANGED TO RECEIVE A SIGNAL TRAIN HAVING A PREDETERMINED WHOLE NUMBER OF CYCLES OF A SYNCHRONISING TONE INSERTED AT REGULAR INTERVALS CORRESPONDING TO AN EVEN WHOLE NUMBER (2N) OF CYCLES OF THE SYNCHRONISING TONE AND INCLUDING A COHERENT OSCILLATOR CONNECTED TO RECEIVE THE SIGNAL TRAIN AND TUNED FOR SYNCHRONISATION WITH THE SAID SYNCHRONISING TONE, PHASE REVERSER MEANS FOR REVERSING THE PHASE OF SIGNALS DERIVED FROM THE COHERENT OSCILLATOR ONCE EVERY N CYCLES OF OSCILLATION OF THE COHERENT OSCILLATOR, A COHERENT
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) | 1967-11-03 | 1968-05-04 | 1968-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-03 | 1972-05-04 | 1972-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-03 | 1976-05-04 | 1976-11-03 | $7700.00 | Window Closed / Lapsed |