US3194891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching network
Assignee: Individual
•
Filing: 1962-04-13
•
Granted: 1965-07-13
•
Expires: 1982-04-13
Abstract
No abstract record available.
Inventors
- 👤 Pierre M Lucas
- 👤 Michael M Rouzier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:27
CPC Classifications
H; H04; H04Q; H04Q3/00; H04Q3/42; H04Q3/54; H04Q3/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN A TELEPHONE SYSTEM, A SWITCH CONTROL CIRCUIT RESPONSIVE TO THE SERVICE CONDITION OF A NUMBER OF TELEPHONE LINES AND CIRCUITS AND AN ELECTRONIC SWITCHING NETWORK FOR THE INTERCONNECTION AND DISCONNECTION OF SAID LINES AND CIRCUITS AS A FUNCTION OF RESTRICTED NUMBER OF ORDERS FROM SAID SWITCH CONTROL CIRCUIT, SAID ELECTRONIC SWITCHING NETWORK COMPRISING A SPACE-DIVISION CONNECTION NETWORK AND A LOGICAL MEANS SECTION CALLED SWITCHING LOGIC, SAID CONNECTION NETWORK BEING CONSTITUTED OF CROSSPOINTS ARRANGED IN RECTANGULAR MATRICES DIVIDED INTO A PLURALITY OF STAGES CONNECTED BY SINGLE-WIRE JUNCTIONS CERTAIN OF WHICH ARE PARALLEL TO ONE ANOTHER, SAID CONNECTION NETWORK COMPRISING METHODICAL TEST MEANS FOR EFFECTING UNDER THE CONTROL OF SAID SWITCHING LOGIC AND BEFORE ANY CONNECTION OPERATION A TEST OF THE FREE OR ENGAGED CONDITION OF EACH JUNCTION WHICH CAN TAKE PART IN A PATH CAPABLE OF CONNECTING ANY TWO GIVEN TELEPHONIC LINES OR CIRCUITS LINKED TO SAID CONNECTION NETWORK UNTIL SUCH A COMPLETE PATH IS DETERMINED OR A BLOCKAGE IS INDICATED IF NONE IS AVAILABLE.
Claim 2
Dependent Claim
165 words
IN A TELEPHONE SYSTEM, A SWITCH CONTROL CIRCUIT RESPONSIVE TO THE SERVICE CONDITION OF A NUMBER OF TELEPHONE LINES AND CIRCUITS AND AN ELECTRONIC SWITCHING NETWORK FOR THE INTERCONNECTION AND DISCONNECTION OF SAID LINES AND CIRCUITS AS A FUNCTION OF RESTRICTED NUMBER OF ORDERS FROM SAID SWITCH CONTROL CIRCUIT, SAID ELECTRONIC SWITCHING NETWORK COMPRISING A SPACE-DIVISION CONNECTION NETWORK AND A LOGICAL MEANS SECTION CALLED SWITCHING LOGIC, SAID CONNECTION NETWORK BEING CONSTITUTED OF CROSSPOINTS ARRANGED IN RECTANGULAR MATRICES DIVIDED INTO A PLURALITY OF STAGES CONNECTED BY SINGLE-WIRE JUNCTIONS CERTAIN OF WHICH ARE PARALLEL TO ONE ANOTHER, SAID CONNECTION NETWORK COMPRISING METHODICAL TEST MEANS FOR EFFECTING UNDER THE CONTROL OF SAID SWITCHING LOGIC AND BEFORE ANY CONNECTION OPERATION A TEST OF THE FREE OR ENGAGED CONDITION OF EACH JUNCTION WHICH CAN TAKE PART IN A PATH CAPABLE OF CONNECTING ANY TWO GIVEN TELEPHONIC LINES OR CIRCUITS LINKED TO SAID CONNECTION NETWORK UNTIL SUCH A COMPLETE PATH IS DETERMINED OR A BLOCKAGE IS INDICATED IF NONE IS AVAILABLE.
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) | 1968-07-12 | 1969-01-11 | 1969-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-12 | 1973-01-11 | 1973-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-12 | 1977-01-11 | 1977-07-13 | $7700.00 | Window Closed / Lapsed |