US3275759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Break-in arrangement with compensation for variations in the trans-hybrid loss for echo suppressors
Assignee: AT&T Inc
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Filing: 1963-04-15
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Granted: 1966-09-27
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Expires: 1983-04-15
Abstract
No abstract record available.
Inventors
- 👤 Paul T Brady
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 23:33
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A TRANSMISSION SYSTEM INCLUDING AT LEAST TWO TERMINALS INTERCONNECTED BY TRANSMITTING AND RECEIVING PATHS, AN ECHO SUPPRESSOR CONNECTED TO SAID PATHS AT EACH TERMINAL FOR INSERTING ATTENUATION IN THE TRANSMITTING PATH WHEN SIGNALS ARE RECEIVED IN THE RECEIVING PATH FROM THE OTHER OF SAID TERMINALS, AN AMPLIFIER CONNECTED TO EACH OF SAID PATHS FOR PRODUCING AN AMPLIFIED REPLICA OF THE SIGNALS THEREON, MEANS FOR COMPARING THE LEVELS OF SAID AMPLIFIED
Claim 2
Dependent Claim
71 words
IN A TRANSMISSION SYSTEM INCLUDING AT LEAST TWO TERMINALS INTERCONNECTED BY TRANSMITTING AND RECEIVING PATHS, AN ECHO SUPPRESSOR CONNECTED TO SAID PATHS AT EACH TERMINAL FOR INSERTING ATTENUATION IN THE TRANSMITTING PATH WHEN SIGNALS ARE RECEIVED IN THE RECEIVING PATH FROM THE OTHER OF SAID TERMINALS, AN AMPLIFIER CONNECTED TO EACH OF SAID PATHS FOR PRODUCING AN AMPLIFIED REPLICA OF THE SIGNALS THEREON, MEANS FOR COMPARING THE LEVELS OF SAID AMPLIFIED
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |