US3221102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Time-division multiplex control method for electronic switching systems in telecommunication, particularly telephone installations
Assignee: International Standard Electric Corp
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Filing: 1961-12-04
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Granted: 1965-11-30
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Expires: 1981-12-04
Abstract
No abstract record available.
Inventors
- 👤 Merz Gerhard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:15
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
AN ELECTRONIC SWITCHING SYSTEM COMPRISING AT LEAST A FIRST AND A SECOND GROUP OF FUNCTIONAL UNITS, A TIME DIVISION MULTIPLEX SYSTEM INDIVIDUALLY ASSOCIATED WITH EACH OF SAID GROUPS FOR COMMUNICATIVELY INTERCONNECTING ANY OF SAID UNITS, AND TIME DIVISION COMPUTER MEANS INCLUDED IN EACH OF SAID INDIVIDUAL MULTIPLEX SYSTEMS FOR PROVIDING PERIODICALLY REPEATED TIME INTERVALS WITH ARE INDIVIDUAL TO EACH OF SAID GROUPS FOR CONTROLLING THE UNITS WITHIN SAID GROUPS, SAID TIME INTERVALS BEING DETERMINED BY THE TIME PERIOD OF EACH MULTIPLEX SYSTEM AND BY THE NUMBER OF UNITS IN THE ASSOCIATED GROUP, EACH OF SAID TIME INTERVALS FURTHER BEING INTEGER MULTIPLES OF ONE ANOTHER SO THAT EACH OF SAID TIME INTERVALS COINCIDES ONCE PER TIME PERIOD FOR EXCHANGING INFORMATION BETWEEN SAID INTERCONNECTED UNITS DURING THE COINCIDENCE OF TIME PERIODS.
Claim 2
Dependent Claim
129 words
AN ELECTRONIC SWITCHING SYSTEM COMPRISING AT LEAST A FIRST AND A SECOND GROUP OF FUNCTIONAL UNITS, A TIME DIVISION MULTIPLEX SYSTEM INDIVIDUALLY ASSOCIATED WITH EACH OF SAID GROUPS FOR COMMUNICATIVELY INTERCONNECTING ANY OF SAID UNITS, AND TIME DIVISION COMPUTER MEANS INCLUDED IN EACH OF SAID INDIVIDUAL MULTIPLEX SYSTEMS FOR PROVIDING PERIODICALLY REPEATED TIME INTERVALS WITH ARE INDIVIDUAL TO EACH OF SAID GROUPS FOR CONTROLLING THE UNITS WITHIN SAID GROUPS, SAID TIME INTERVALS BEING DETERMINED BY THE TIME PERIOD OF EACH MULTIPLEX SYSTEM AND BY THE NUMBER OF UNITS IN THE ASSOCIATED GROUP, EACH OF SAID TIME INTERVALS FURTHER BEING INTEGER MULTIPLES OF ONE ANOTHER SO THAT EACH OF SAID TIME INTERVALS COINCIDES ONCE PER TIME PERIOD FOR EXCHANGING INFORMATION BETWEEN SAID INTERCONNECTED UNITS DURING THE COINCIDENCE OF TIME PERIODS.
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) | 1968-11-29 | 1969-05-31 | 1969-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-29 | 1973-05-31 | 1973-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-29 | 1977-05-31 | 1977-11-30 | $7700.00 | Window Closed / Lapsed |