Patent US3300587A successfully refreshed from Google Patents.
US3300587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic telecommunication exchanges
Assignee: International Standard Electric Corp
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Filing: 1963-07-05
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Granted: 1967-01-24
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Expires: 1983-07-05
Abstract
No abstract record available.
Inventors
- 👤 Knight Ronald George
- 👤 Branch Maurice Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:07
CPC Classifications
H; H04; H04Q; H04Q11/00; H04Q11/04; H04J; H04J3/00; H04J3/16; H04Q3/00; H04Q3/0008; H04Q3/0012
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
AN AUTOMATIC TELECOMMUNICATIONS SYSTEM COMPRISING A SWITCHING NETWORK HAVING A PLURALITY OF INLETS AND OUTLETS WITH CROSSPOINTS THEREBETWEEN, MEANS FOR SELECTIVELY OPERATING SAID CROSSPOINTS TO INTERCONNECT SELECTED INLETS AND OUTLETS, A PLURALITY OF TWO WIRE CIRCUITS CONNECTED TO SOME OF SAID INLETS, A PLURALITY OF FOUR WIRE CIRCUITS CONNECTED TO OTHERS OF SAID INLETS, ROUTE SELECTOR MEANS FOR SETTING UP PATHS FROM ANY INLET THROUGH ANY AVAILABLE CROSSPOINTS IN SAID NETWORK TO ANY OUTLET, AND MEANS FOR OPERATING SAID ROUTE SELECTOR MEANS TO COMPLET A SINGLE PATH FROM TWO WIRE CIRCUIT INLETS THROUGH SAID NETWORK AND TO COMPLETE A PAIR OF PARALLEL PATHS FROM SAID FOUR WIRE CIRCUIT INLETS THROUGH SAID NETWORK TO A SELECTED OUTLET, SAID PAIR OF SAID PATHS BEING SELECTED INDEPENDENTLY OF EACH OTHER SO THAT SAID PAIR OF PATHS ARE NOT DIRECTLY ASSOCIATED WITH EACH OTHER EXCEPT DURING ANY GIVEN CALL.
Claim 2
Dependent Claim
145 words
AN AUTOMATIC TELECOMMUNICATIONS SYSTEM COMPRISING A SWITCHING NETWORK HAVING A PLURALITY OF INLETS AND OUTLETS WITH CROSSPOINTS THEREBETWEEN, MEANS FOR SELECTIVELY OPERATING SAID CROSSPOINTS TO INTERCONNECT SELECTED INLETS AND OUTLETS, A PLURALITY OF TWO WIRE CIRCUITS CONNECTED TO SOME OF SAID INLETS, A PLURALITY OF FOUR WIRE CIRCUITS CONNECTED TO OTHERS OF SAID INLETS, ROUTE SELECTOR MEANS FOR SETTING UP PATHS FROM ANY INLET THROUGH ANY AVAILABLE CROSSPOINTS IN SAID NETWORK TO ANY OUTLET, AND MEANS FOR OPERATING SAID ROUTE SELECTOR MEANS TO COMPLET A SINGLE PATH FROM TWO WIRE CIRCUIT INLETS THROUGH SAID NETWORK AND TO COMPLETE A PAIR OF PARALLEL PATHS FROM SAID FOUR WIRE CIRCUIT INLETS THROUGH SAID NETWORK TO A SELECTED OUTLET, SAID PAIR OF SAID PATHS BEING SELECTED INDEPENDENTLY OF EACH OTHER SO THAT SAID PAIR OF PATHS ARE NOT DIRECTLY ASSOCIATED WITH EACH OTHER EXCEPT DURING ANY GIVEN CALL.
References Cited (Backward Citations)
US2495739A
Cited
US2564419A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |