FR1506115A
(en )
1967-12-15
Device for switching electrical installations
CH256716A
(en )
1948-08-31
Stop device for a selector in a switching installation of an electrical network.
FR1511678A
(en )
1968-02-02
Connection network layout for time switching
CH279787A
(en )
1951-12-15
Selection device for telecommunications installation.
FR938261A
(en )
1948-09-09
Telephone network
FR879475A
(en )
1943-02-24
Device for the regulation of an electrical network quantity
FR938891A
(en )
1948-10-27
Electrical switching device
FR952389A
(en )
1949-11-16
Modulator device, in particular for power line telephone installations
CH245512A
(en )
1946-11-15
Device for switching electrical circuits.
FR979029A
(en )
1951-04-20
Control devices for electric circuit breakers fitted with a disconnector
FR902547A
(en )
1945-09-03
Contact bench for electrical switches. especially for telephone system selectors
FR1397235A
(en )
1965-04-30
Telecommunications switching network
FR1055345A
(en )
1954-02-17
Installation for switching off selectors, in particular in telecommunications installations
FR1087945A
(en )
1955-03-01
Current pulse transmitter for telephone systems with selector operation
FR1044480A
(en )
1953-11-17
Switching key for telephone systems
FR897775A
(en )
1945-03-30
switching equipment for telecommunications systems
FR772716A
(en )
1934-11-05
Electrical switching device for control systems
CH283254A
(en )
1952-05-31
Subscriber station of a telegraph installation.
FR1521700A
(en )
1968-04-19
Switching device for telecommunication network
FR1059213A
(en )
1954-03-23
Installation for pulse-free switching on electrical systems with power transformers
FR986621A
(en )
1951-08-02
Device for adjusting one electrical quantity by another
FR884141A
(en )
1943-08-03
Switching systems for establishing telephone or similar connections
FR904747A
(en )
1945-11-14
Subscriber line circuits for telecommunications systems
FR893118A
(en )
1944-05-31
Connection terminal for electrical pipes
FI41294C
(en )
1969-10-10
Equipment for fully automatic telephone traffic to the subscriber lines of an automatic call center