US3111624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic system for selectively substituting spare channels for failed working channels in a multichannel multilink communication system
Assignee: AT&T Inc
•
Filing: 1960-01-04
•
Granted: 1963-11-19
•
Expires: 1980-01-04
Abstract
No abstract record available.
Inventors
- 👤 Francis S Farkas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:34
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/74
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN A COMMUNICATION SYSTEM, A TRANSMITTING AND A RECEIVING STATION, A PLURALITY OF INFORMATION CARRYING CHANNELS LINKING SAID STATIONS, A PLURALITY OF SPARE CHANNELS ALSO LINKING SAID STATIONS, MEANS AT EACH OF SAID STATIONS FOR SUBSTITUTING A FIRST ONE OF SAID SPARE CHANNELS FOR A FAILED INFORMATION CARRYING CHANNEL, MEANS AT SAID RECEIVING STATION FOR DETECTING THE FAILURE OF AN INFORMATION CARRYING CHANNEL, MEANS AT THE TRANSMITTING STATION RE-
Claim 2
Dependent Claim
69 words
IN A COMMUNICATION SYSTEM, A TRANSMITTING AND A RECEIVING STATION, A PLURALITY OF INFORMATION CARRYING CHANNELS LINKING SAID STATIONS, A PLURALITY OF SPARE CHANNELS ALSO LINKING SAID STATIONS, MEANS AT EACH OF SAID STATIONS FOR SUBSTITUTING A FIRST ONE OF SAID SPARE CHANNELS FOR A FAILED INFORMATION CARRYING CHANNEL, MEANS AT SAID RECEIVING STATION FOR DETECTING THE FAILURE OF AN INFORMATION CARRYING CHANNEL, MEANS AT THE TRANSMITTING STATION RE-
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) | 1966-11-18 | 1967-05-20 | 1967-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-18 | 1971-05-20 | 1971-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-18 | 1975-05-20 | 1975-11-19 | $7700.00 | Window Closed / Lapsed |