BE574335A
(en )
1959-04-16
Switching circuit.
BE597188A
(en )
1961-03-15
Telephone switching system.
FR1366484A
(en )
1964-07-10
Improvements to telephone switching systems
BE586900A
(en )
1960-05-16
Switching circuits.
FR87754E
(en )
1966-10-07
Switching system improvements
BE608414A
(en )
1962-03-22
Improvements to telecommunication systems.
FR1466383A
(en )
1967-01-20
Improvements to automatic switching systems
FR85259E
(en )
1965-07-09
Improvements to telephone switching systems
FR1298882A
(en )
1962-07-13
Advanced Telecommunications Automatic Switching Systems
FR1235584A
(en )
1960-07-08
Switching systems
BE606255A
(en )
1961-11-10
Advanced Telecommunications Automatic Switching Systems
BE608762A
(en )
1962-02-01
Automatic telephone switching system.
BE611785A
(en )
1962-04-16
Advanced Telecommunications Automatic Switching Systems
BE607754A
(en )
1961-12-18
Improvements to automatic telecommunication switching systems.
BE606409A
(en )
1961-11-16
Telephone switch systems
FR1299787A
(en )
1962-07-27
Switchgear for automatic telecommunications
FR1265022A
(en )
1961-06-23
Improvements to automatic switching circuits
FR1249221A
(en )
1960-12-30
Improvements to alternative switching telecommunication systems
FR1384853A
(en )
1965-01-08
Automatic switching system
FR78526E
(en )
1962-08-03
Improvements to automatic telephone systems
FR1440352A
(en )
1966-05-27
Improvements to automatic telephone systems
FR1439729A
(en )
1966-05-20
Improvements to automatic telephone systems
FR82663E
(en )
1964-03-27
Switchgear for automatic telecommunications
FR1276158A
(en )
1961-11-17
Switching pole enhancements
FR1260771A
(en )
1961-05-12
Improvements to digital type automatic regulation systems