CH356488A
(en )
1961-08-31
Telecommunications office
CH335355A
(en )
1958-12-31
Magnetic delay network
CH331072A
(en )
1958-06-30
Circuit arrangement for a subscriber line in an automatic telephone exchange
FR1158020A
(en )
1958-06-06
Electronic circuit of telephone subscriber lines
AT198330B
(en )
1958-06-25
Circuit for multiple and single counting of telephone calls in an automated long-distance network
FR1133423A
(en )
1957-03-27
Standard digital electronic adder
FR72908E
(en )
1960-09-21
Crossbar telephone system divided into primary and secondary
CH354811A
(en )
1961-06-15
Switching of a subscriber circuit in an electronic telephone exchange
FR1162775A
(en )
1958-09-17
Electronic telephone system
CH317776A
(en )
1956-11-30
Alloy for soldering and soldering
CH343462A
(en )
1959-12-31
Telephone subscriber set
FR1165166A
(en )
1958-10-20
Electronic telephone exchange
CH347861A
(en )
1960-07-31
Rotary dial for telecommunications and telephone systems
CH351641A
(en )
1961-01-31
Circuit arrangement in telecommunications systems
CH326378A
(en )
1957-12-15
Control device in a carrier frequency telephone system
FR1094216A
(en )
1955-05-16
Ferrite gyrators and faraday plates for said gyrators
FR1097940A
(en )
1955-07-12
Improvement in electrical plugs
CH343449A
(en )
1959-12-31
Circuit arrangement for counting pulses
AT189240B
(en )
1957-03-11
Telephone station
AT191038B
(en )
1957-07-25
Circuit arrangement for automatically keeping constant electrical quantities in an electrical consumer network
FR66231E
(en )
1956-06-05
modern equipment of telecommunications equipment centers and posts
FR1134470A
(en )
1957-04-11
Basic cabinet for telephone and telegraph networks
CH316857A
(en )
1956-10-31
Alloy for soldering and soldering
CH316033A
(en )
1956-09-15
Telephone subscriber station
AT193962B
(en )
1957-12-10
Terminal block