US3084223A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crosstalk reduction in plural carrier multiplex systems
Assignee: AT&T Inc
•
Filing: 1960-12-23
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Granted: 1963-04-02
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Enrique A J Marcatili
- 👤 Douglas H Ring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:23
CPC Classifications
H; H04; H04J; H04J1/00; H04J1/02; H04J1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
IN A TRANSMISSION SYSTEM, A SOURCE OF A PLURALITY OF FREQUENCY SPACED CARRIER WAVES, MEANS FOR MODULATING SAID CARRIERS WITH PULSE TRAINS HAVING SYNCHRONOUS TIME SLOTS, A COMMON TRANSMISSION MEDIUM FOR SAID CARRIER WAVES, AND MEANS FOR TRANSMITTING SAID MODULATED CARRIER WAVES OVER SAID COMMON MEDIUM WITH ALTERNATE ONES OF SAID CARRIERS BEING DELAYED AT THE TRANSMITTER ONEHALF TIME SLOT WITH RESPECT TO THE REMAINDER OF SAID CARRIERS.
Claim 2
Dependent Claim
68 words
IN A TRANSMISSION SYSTEM, A SOURCE OF A PLURALITY OF FREQUENCY SPACED CARRIER WAVES, MEANS FOR MODULATING SAID CARRIERS WITH PULSE TRAINS HAVING SYNCHRONOUS TIME SLOTS, A COMMON TRANSMISSION MEDIUM FOR SAID CARRIER WAVES, AND MEANS FOR TRANSMITTING SAID MODULATED CARRIER WAVES OVER SAID COMMON MEDIUM WITH ALTERNATE ONES OF SAID CARRIERS BEING DELAYED AT THE TRANSMITTER ONEHALF TIME SLOT WITH RESPECT TO THE REMAINDER OF SAID CARRIERS.
References Cited (Backward Citations)
US2559644A
Cited
US2607035A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |