US3072748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line protection in radio relay systems
Assignee: AT&T Inc
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Filing: 1961-02-28
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Granted: 1963-01-08
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Expires: 1981-02-28
Abstract
No abstract record available.
Inventors
- 👤 Leonard G Abraham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:02
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
211 words
IN A COMMUNICATION SYSTEM, A SENDING POINT AND A RECEIVING POINT, AT LEAST TWO WORKING LINES INTERCONNECTING SAID SENDING POINT AND SAID RECEIVING POINT, INFORMATION SIGNAL SOURCES INDIVIDUAL TO SAID WORKING LINES AND SITUATED AT SAID SENDING POINT, A PROTECTION LINE INTERCONNECTING SAID SENDING POINT AND RECEIVING POINT, APPARATUS AT SAID SENDING POINT COMPRISING MEANS FOR TRANSMITTING EACH OF SAID INFORMATION SIGNALS OVER ITS RESPECTIVE WORKING LINE, MEANS FOR ABSTRACTING A PORTION OF EACH OF SAID INFORMATION SIGNALS, MEANS FOR COMBINING SAID PORTIONS, AND MEANS FOR TRANSMITTING THE COMBINED SIGNAL OVER SAID PROTECTION LINE, AND APPARATUS AT SAID RECEIVING POINT COMPRISING MEANS FOR RECOVERING SAID INFORMATION SIGNALS FROM SAID WORKING LINES, MEANS FOR RECOVERING SAID COMBINED SIGNAL FROM SAID PROTECTION LINE, MEANS FOR SEPARATING SAID COMBINED SIGNAL INTO ITS COMPONENT PORTIONS, LOAD CIRCUITS INDIVIDUAL TO EACH OF SAID WORKING LINES, MEANS FOR APPLYING EACH OF SAID INFORMATION SIGNALS CARRIED BY SAID WORKING LINES TO ITS RESPECTIVE LOAD CIRCUIT, AND MEANS UPON FAILURE OF THE INFORMATION SIGNAL CARRIED BY ANY OF SAID WORKING LINES TO ARRIVE SATISFACTORILY AT SAID RECEIVING POINT FOR APPLYING THE PORTION OF THE INFORMATION SIGNAL CARRIED ON SAID PROTECTION LINE CORRESPONDING TO THAT CARRIED ON THE FAILED WORKING LINE TO THE LOAD CIRCUIT OF SAID FAILED WORKING LINE.
Claim 2
Dependent Claim
211 words
IN A COMMUNICATION SYSTEM, A SENDING POINT AND A RECEIVING POINT, AT LEAST TWO WORKING LINES INTERCONNECTING SAID SENDING POINT AND SAID RECEIVING POINT, INFORMATION SIGNAL SOURCES INDIVIDUAL TO SAID WORKING LINES AND SITUATED AT SAID SENDING POINT, A PROTECTION LINE INTERCONNECTING SAID SENDING POINT AND RECEIVING POINT, APPARATUS AT SAID SENDING POINT COMPRISING MEANS FOR TRANSMITTING EACH OF SAID INFORMATION SIGNALS OVER ITS RESPECTIVE WORKING LINE, MEANS FOR ABSTRACTING A PORTION OF EACH OF SAID INFORMATION SIGNALS, MEANS FOR COMBINING SAID PORTIONS, AND MEANS FOR TRANSMITTING THE COMBINED SIGNAL OVER SAID PROTECTION LINE, AND APPARATUS AT SAID RECEIVING POINT COMPRISING MEANS FOR RECOVERING SAID INFORMATION SIGNALS FROM SAID WORKING LINES, MEANS FOR RECOVERING SAID COMBINED SIGNAL FROM SAID PROTECTION LINE, MEANS FOR SEPARATING SAID COMBINED SIGNAL INTO ITS COMPONENT PORTIONS, LOAD CIRCUITS INDIVIDUAL TO EACH OF SAID WORKING LINES, MEANS FOR APPLYING EACH OF SAID INFORMATION SIGNALS CARRIED BY SAID WORKING LINES TO ITS RESPECTIVE LOAD CIRCUIT, AND MEANS UPON FAILURE OF THE INFORMATION SIGNAL CARRIED BY ANY OF SAID WORKING LINES TO ARRIVE SATISFACTORILY AT SAID RECEIVING POINT FOR APPLYING THE PORTION OF THE INFORMATION SIGNAL CARRIED ON SAID PROTECTION LINE CORRESPONDING TO THAT CARRIED ON THE FAILED WORKING LINE TO THE LOAD CIRCUIT OF SAID FAILED WORKING LINE.
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) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |