US3099719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Private branch exchange telephone system including conference facilities
Assignee: AT&T Inc
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Filing: 1961-12-08
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Granted: 1963-07-30
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Expires: 1981-12-08
Abstract
No abstract record available.
Inventors
- 👤 Alexander E Gerbore
- 👤 Roger A Plyer
- 👤 Jr William C Steger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
IN A TELEPHONE SYSTEM, A PRIVATE BRANCH EXCHANGE, AN ATTENDANT''S POSITION AT SAID PRIVATE BRANCH EXCHANGE, A PLURALITY OF STATION LINES, A FIRST CONFERENCE BRIDGE AND A SECOND CONFERENCE BRIDGE, BOTH OF SAID CONFERENCE BRIDGES BEING AT SAID SAME PRIVATE BRANCH EXCHANGE AND EACH OF SAID CONFERENCE BRIDGES HAVING A PLURALITY OF CONFERENCE LINES CONNECTED THERETO, MEANS UNDER CONTROL OF SAID ATTENDANT''S POSITION FOR CONNECTING SELECTED ONES OF SAID SATION LINES TO SELECTED ONES OF SAID CONFERENCE LINES CONNECTED TO SAID FIRST CONFERENCE BRIDGE EXCEPT FOR AN EXCLUSIVE ONE OF SAID CONFERENCE LINES AND FOR CONNECTING OTHER SELECTED ONES OF SAID STATION LINES TO SELECTED ONES OF SAID CONFERENCE LINES CONNECTED TO SAID SECOND CONFERENCE BRIDGE EXCEPT FOR AN EXCLUSIVE ONE OF SAID CONFERENCEE LINES, AND MEANS ALSO UNDER CONTROL OF SAID ATTENDANT''S POSITION FOR CONNECTING SAID EXCLUSIVE ONES OF SAID CONFERENCE LINES TOGETHER TO CONNECT SAID CONFERENCE BRIDGES IN TANDEM WHEREBY TO PROVIDE A SINGLE CONFERENCE LOOP OF RELATIVELY LARGE CAPACITY.
Claim 2
Dependent Claim
162 words
IN A TELEPHONE SYSTEM, A PRIVATE BRANCH EXCHANGE, AN ATTENDANT''S POSITION AT SAID PRIVATE BRANCH EXCHANGE, A PLURALITY OF STATION LINES, A FIRST CONFERENCE BRIDGE AND A SECOND CONFERENCE BRIDGE, BOTH OF SAID CONFERENCE BRIDGES BEING AT SAID SAME PRIVATE BRANCH EXCHANGE AND EACH OF SAID CONFERENCE BRIDGES HAVING A PLURALITY OF CONFERENCE LINES CONNECTED THERETO, MEANS UNDER CONTROL OF SAID ATTENDANT''S POSITION FOR CONNECTING SELECTED ONES OF SAID SATION LINES TO SELECTED ONES OF SAID CONFERENCE LINES CONNECTED TO SAID FIRST CONFERENCE BRIDGE EXCEPT FOR AN EXCLUSIVE ONE OF SAID CONFERENCE LINES AND FOR CONNECTING OTHER SELECTED ONES OF SAID STATION LINES TO SELECTED ONES OF SAID CONFERENCE LINES CONNECTED TO SAID SECOND CONFERENCE BRIDGE EXCEPT FOR AN EXCLUSIVE ONE OF SAID CONFERENCEE LINES, AND MEANS ALSO UNDER CONTROL OF SAID ATTENDANT''S POSITION FOR CONNECTING SAID EXCLUSIVE ONES OF SAID CONFERENCE LINES TOGETHER TO CONNECT SAID CONFERENCE BRIDGES IN TANDEM WHEREBY TO PROVIDE A SINGLE CONFERENCE LOOP OF RELATIVELY LARGE CAPACITY.
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) | 1966-07-29 | 1967-01-28 | 1967-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-29 | 1971-01-28 | 1971-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-29 | 1975-01-28 | 1975-07-30 | $7700.00 | Window Closed / Lapsed |