Patent US1986248A successfully refreshed from Google Patents.
Patent US3274342A successfully refreshed from Google Patents.
US3274342A
Expired / Lapsed
US
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Common channel communication system conference circuit
Assignee: Stromberg Carlson Corp
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Filing: 1962-01-04
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Granted: 1966-09-20
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Expires: 1982-01-04
Abstract
No abstract record available.
Inventors
- 👤 Brightman Barrie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:29
CPC Classifications
H; H04; H04M; H04M3/00; H04M3/42; H04M3/56; H04Q; H04Q11/00; H04Q11/04; H04M2203/00; H04M2203/50; H04M2203/5054
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
IN A COMMUNICATION SYSTEM, FIRST AND SECOND PLURALITY OF STATION S, A COMMON COMMUNICATION CHANNEL, FIRST MEANS RESPONSIVE TO PREDETERMINED SIGNALS FROM A CALLING ONE OF SAID FIRST PLURALITY OF STATIONS FOR CONNECTING SAID CALLING ONE OF SAID FIRST PLURALITY OF STATIONS AND ONE OF SAID SECOND PLURALITY OF STATIONS TO SAID COMMON COMMUNICATION CHANNEL IN A TIME POSITION IN A REPETITIVE TIME FRAME, SAID FIRST MEANS RESPONSIVE TO SUBSEQUENT SIGNALS FROM SAID CALLING ONE OF SAID FIRST PLURALITY OF STATIONS FOR CONNECTING A SELECTED CALLED ONE OF SAID FIRST PLURALITY OF STATIONS AND A SECOND ONE OF SAID SECOND PLURALITY OF STATIONS TO SAID COMMON COMMUNICATION CHANNEL IN AN INDIVIDUAL TIME POSITION IN SAID RESPECTIVE TIME FRAME, EACH OF SAID SECOND PLURALITY OF STATIONS HAVING AN OUTPUT SIGNAL TERMINAL AND A PLURALITY OF INPUTS SIGNAL TERMINALS, AND SECOND MEANS FOR CONNECTING THE OUTPUT TERMINAL OF EACH OF SAID SECOND PLURALITY OF STATIONS TO A SEPARATE ONE OF SAID INPUT TERMINALS ON EACH OF THE OTHER OF SAID SECOND PLURALITY OF STATIONS.
Claim 2
Dependent Claim
172 words
IN A COMMUNICATION SYSTEM, FIRST AND SECOND PLURALITY OF STATION S, A COMMON COMMUNICATION CHANNEL, FIRST MEANS RESPONSIVE TO PREDETERMINED SIGNALS FROM A CALLING ONE OF SAID FIRST PLURALITY OF STATIONS FOR CONNECTING SAID CALLING ONE OF SAID FIRST PLURALITY OF STATIONS AND ONE OF SAID SECOND PLURALITY OF STATIONS TO SAID COMMON COMMUNICATION CHANNEL IN A TIME POSITION IN A REPETITIVE TIME FRAME, SAID FIRST MEANS RESPONSIVE TO SUBSEQUENT SIGNALS FROM SAID CALLING ONE OF SAID FIRST PLURALITY OF STATIONS FOR CONNECTING A SELECTED CALLED ONE OF SAID FIRST PLURALITY OF STATIONS AND A SECOND ONE OF SAID SECOND PLURALITY OF STATIONS TO SAID COMMON COMMUNICATION CHANNEL IN AN INDIVIDUAL TIME POSITION IN SAID RESPECTIVE TIME FRAME, EACH OF SAID SECOND PLURALITY OF STATIONS HAVING AN OUTPUT SIGNAL TERMINAL AND A PLURALITY OF INPUTS SIGNAL TERMINALS, AND SECOND MEANS FOR CONNECTING THE OUTPUT TERMINAL OF EACH OF SAID SECOND PLURALITY OF STATIONS TO A SEPARATE ONE OF SAID INPUT TERMINALS ON EACH OF THE OTHER OF SAID SECOND PLURALITY OF STATIONS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |