US3308242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching system minimizing traffic between switch frames
Assignee: AT&T Inc
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Filing: 1963-12-30
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Granted: 1967-03-07
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Edson L Erwin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:33
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/0004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
IN A SWITCHING SYSTEM, A PLURALITY OF INCOMING CIRCUITS DIVIDED INTO GROUPS, A PLURALITY OF OUTGOING CIRCUITS DIVIDED INTO CORRESPONDING GROUPS, SWITCHING MEANS FOR INTERCONNECTING ANY INCOMING CIRCUIT WITH ANY OUTGOING CIRCUIT, IDENTIFYING MEANS RESPONSIVE TO A SERVICE REQUEST SIGNAL ON ONE OF SAID INCOMING CIRCUITS FOR IDENTIFYING THE PARTICULAR GROUP CONTAINING SAID ONE INCOMING CIRCUIT REQUESTING SERVICE, AND MEANS GOVERNED BY SAID GROUP IDENTIFYING MEANS FOR SELECTING AN IDLE ONE OF SAID OUTGOING CIRCUITS IN ACCORDANCE WITH THE PARTICULAR IDENTITY OF SAID IDENTIFIED GROUP AND FOR DIRECTING SAID SWITCHING MEANS TO INTERCONNECT SAID ONE INCOMING CIRCUIT WITH SAID SELECTED OUTGOING CIRCUIT ENTIRELY WITHIN SAID IDENTIFIED GROUP.
Claim 2
Dependent Claim
107 words
IN A SWITCHING SYSTEM, A PLURALITY OF INCOMING CIRCUITS DIVIDED INTO GROUPS, A PLURALITY OF OUTGOING CIRCUITS DIVIDED INTO CORRESPONDING GROUPS, SWITCHING MEANS FOR INTERCONNECTING ANY INCOMING CIRCUIT WITH ANY OUTGOING CIRCUIT, IDENTIFYING MEANS RESPONSIVE TO A SERVICE REQUEST SIGNAL ON ONE OF SAID INCOMING CIRCUITS FOR IDENTIFYING THE PARTICULAR GROUP CONTAINING SAID ONE INCOMING CIRCUIT REQUESTING SERVICE, AND MEANS GOVERNED BY SAID GROUP IDENTIFYING MEANS FOR SELECTING AN IDLE ONE OF SAID OUTGOING CIRCUITS IN ACCORDANCE WITH THE PARTICULAR IDENTITY OF SAID IDENTIFIED GROUP AND FOR DIRECTING SAID SWITCHING MEANS TO INTERCONNECT SAID ONE INCOMING CIRCUIT WITH SAID SELECTED OUTGOING CIRCUIT ENTIRELY WITHIN SAID IDENTIFIED GROUP.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |