US3311705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line concentrator and its associated circuits in a time multiplex transmission system
Assignee: International Standard Electric Corp
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Filing: 1963-04-05
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Granted: 1967-03-28
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Expires: 1983-04-05
Abstract
No abstract record available.
Inventors
- 👤 Corre Jean Pierre Le
- 👤 Lefevre Rene Alexander Marcel
- 👤 Yelloz Raphael Guy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:37
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04Q11/0407
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
97 words
A TIME DIVISION MULTIPLEX TELEPHONE SYSTEM COMPRISING AN OFFICE HAVING A PLURALITY OF CONCENTRATORS ASSOCIATED THEREWITH VIA MULTI-CHANNEL HIGHWAYS, MEANS FOR SELECTING AND USING ANY FREE ONE OF SAID CHANNELS AS A SERVICE CHANNEL OVER WHICH SAID OFFICE AND CONCENTRATORS MAY EXCHANGE CONTROL INFORMATION, LOCAL CLOCK MEANS AT SAID OFFICE AND EACH OF SAID CONCENTRATORS, MEANS RESPONSIVE TO SIGNALS TRANSMITTED DURING A PARTICULAR TIME SLOT FOR SYNCHRONIZING SAID CLOCKS, AND SPACE DIVISION SWITCHING MEANS OPERATED RESPONSIVE TO SAID EXCHANGE CONTROL INFORMATION FOR SELECTING PARTICULAR TIME SLOTS TO PROVIDE A GIVEN CONNECTION FOR GIVING COMMUNICATION THROUGH SAID SYSTEM.
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) | 1970-03-27 | 1970-09-26 | 1971-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-27 | 1974-09-26 | 1975-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-27 | 1978-09-26 | 1979-03-28 | $7700.00 | Window Closed / Lapsed |