CH363378A
(en )
1962-07-31
Loudspeaker telephone system
CH361310A
(en )
1962-04-15
Automatic telecommunication system
FR1204127A
(en )
1960-01-22
Improvements to automatic telephone systems
DK96191C
(en )
1963-06-10
Coupling to increase traffic capacity in an automatic telephone system.
CH363381A
(en )
1962-07-31
Automatic telephone system with relay sets in an automatic waiting switching device
FR1188597A
(en )
1959-09-23
Telephone system
DK103894C
(en )
1966-03-07
Automatic telephone system.
FR1194399A
(en )
1959-11-09
Telephone system
DK102257C
(en )
1965-08-02
Coupling in an automatic telephone system.
DK92258C
(en )
1961-11-27
Coupling to automatic telephone systems.
DK99689C
(en )
1964-09-07
Coupling to an automatic telephone system.
DK97193C
(en )
1963-10-28
Coupling in automatic telephone systems.
DK100060C
(en )
1964-10-19
Connection to an automatic telephone exchange.
DK84830C
(en )
1958-05-12
Coupling to automatic signaling systems, in particular telephony systems.
DK97296C
(en )
1963-11-11
Coupling for use in an automatic signaling system, eg a telephone system, for applying a signal voltage to several consumers.
DK113154B
(en )
1969-02-24
Coupling for use in an automatic telephone system.
FI28122A
(en )
1956-01-10
Automatic telephone system with satellite
DK99149C
(en )
1964-06-29
Coupling for signal transmission in automatic telephone systems.
FR70176E
(en )
1959-02-19
Automatic telephone system
DK107952C
(en )
1967-07-24
Automatic telephone system.
BE560597A
(en )
1960-04-22
Automatic telecommunication system
FR72753E
(en )
1960-07-22
Improvements to automatic telephone systems
FR1190081A
(en )
1959-10-09
Improvements to automatic telephone systems
FR1164383A
(en )
1958-10-08
Improvements to automatic telephone systems
DK87756C
(en )
1959-08-31
Automatic telephone system.