DK109153C
(en )
1968-03-25
Electricity distribution system.
NL143769B
(en )
1974-10-15
SYNCHRONOUS COMMUNICATION SYSTEM.
CH434385A
(en )
1967-04-30
Telecommunication exchange, in particular telephone exchange
DK119772B
(en )
1971-02-22
Cyanalkylamino-s-triazines for use in plant growth agents.
CH483171A
(en )
1969-12-15
Telecommunications system, in particular telephone exchange
CH370128A
(en )
1963-06-30
Telecommunications system, in particular telephone system, with several rows of frames
NL146018B
(en )
1975-05-15
TIME MULTIPLEX TELEPHONE SYSTEM WITH LINE CONCENTRATORS.
AT199706B
(en )
1958-09-25
Telecommunication system, in particular private branch exchange with meters assigned to the subscribers
AT285682B
(en )
1970-11-10
Corrector arrangement for a telecommunication system, in particular a telephone exchange
CH424875A
(en )
1966-11-30
Telephone network with decentralized concentrators serving to concentrate the lines
FR1204100A
(en )
1960-01-22
Adder network
CH358837A
(en )
1961-12-15
Transmission switching system, in particular for telephone purposes
AT192969B
(en )
1957-11-11
Telecommunication, in particular telephone system with subscribers with different rights to establish certain connections
NL189226B
(en )
TELECOMMUNICATIONS SYSTEM.
CH364816A
(en )
1962-10-15
Automatic private branch exchange with multiple trunk lines
CH363380A
(en )
1962-07-31
Circuit arrangement for establishing connections in telecommunication systems, in particular telephone systems
DK96796C
(en )
1963-09-02
Coupling network in telephone exchange systems.
BE573568A
(en )
1959-06-04
Tractor network.
AT289904B
(en )
1971-05-10
Telecommunications, in particular telephone exchange
FR1165105A
(en )
1958-10-20
Telecommunication network
AT287796B
(en )
1971-02-10
Telecommunication, in particular telephone exchange system with connection paths built up according to the multiple room system
FR1344577A
(en )
1963-11-29
Decentralized telephone line concentrator system
AU218394B2
(en )
1958-03-13
Improvements in or relating to telecommunication exchange systems
DK86146C
(en )
1958-09-01
Coupling to automatic signaling systems, in particular telephony systems.
DK84830C
(en )
1958-05-12
Coupling to automatic signaling systems, in particular telephony systems.