US3129407A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching network control system
Assignee: AT&T Inc
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Filing: 1961-11-24
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Granted: 1964-04-14
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Expires: 1981-11-24
Abstract
No abstract record available.
Inventors
- 👤 Marvin C Paull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:12
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A SYSTEM COMPRISING SWITCHING APPARATUS ARRANGED IN A MULTISTAGE NETWORK, CONTROL MEANS COMPRISING MEANS FOR OPERATING THE SWITCHING APPARATUS TO ESTABLISH A PLURALITY OF LINE-TO-LINE CONNECTIONS THROUGH THE NETWORK, MEANS FOR DETECTING THE PRESENCE OF A BLOCKING CONDITION IN THE NETWORK WITH RESPECT TO A POTENTIAL CONNECTION AND MEANS FOR OPERATING THE SWITCHING APPARATUS WHILE SAID ESTABLISHED CONNECTIONS ARE ACTIVE TO EFFECT A REARRANGEMENT OF CERTAIN OF SAID PLURALITY OF ESTABLISHED CONNECTIONS TO REMOVE THE BLOCKING CONDITION.
Claim 2
Dependent Claim
78 words
IN A SYSTEM COMPRISING SWITCHING APPARATUS ARRANGED IN A MULTISTAGE NETWORK, CONTROL MEANS COMPRISING MEANS FOR OPERATING THE SWITCHING APPARATUS TO ESTABLISH A PLURALITY OF LINE-TO-LINE CONNECTIONS THROUGH THE NETWORK, MEANS FOR DETECTING THE PRESENCE OF A BLOCKING CONDITION IN THE NETWORK WITH RESPECT TO A POTENTIAL CONNECTION AND MEANS FOR OPERATING THE SWITCHING APPARATUS WHILE SAID ESTABLISHED CONNECTIONS ARE ACTIVE TO EFFECT A REARRANGEMENT OF CERTAIN OF SAID PLURALITY OF ESTABLISHED CONNECTIONS TO REMOVE THE BLOCKING CONDITION.
References Cited (Backward Citations)
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |