DK120033C
(en )
1971-08-23
Subscriber television system.
BE597188A
(en )
1961-03-15
Telephone switching system.
DK118832B
(en )
1970-10-12
Telephone set.
BE618457A
(en )
1962-10-01
Polymers.
NL147000B
(en )
1975-08-15
TELEPHONE SWITCHING SYSTEM WITH TIME DIVIDING.
CH434385A
(en )
1967-04-30
Telecommunication exchange, in particular telephone exchange
DK116520B
(en )
1970-01-19
Electronic telephone system.
DK106503C
(en )
1967-02-13
Telephone set.
NL146018B
(en )
1975-05-15
TIME MULTIPLEX TELEPHONE SYSTEM WITH LINE CONCENTRATORS.
DK105539C
(en )
1966-10-10
Telephone subscriber device.
NL142556B
(en )
1974-06-17
TELEPHONE SWITCHING SYSTEM WITH PBX CENTRALS.
BE609823A
(en )
1962-02-15
Integrated telephone switching system.
BE575672A
(en )
1959-05-29
Telephone system.
DK106232C
(en )
1967-01-09
Telecommunication systems, in particular house telephone systems.
DK111613B
(en )
1968-09-23
Telephone directory.
NL146684B
(en )
1975-07-15
TELEPHONE SYSTEM WITH ONE TONE-FREQUENT DIAL DIAL TRANSMITTER PER SUBSCRIPTION MAIL.
DK103242C
(en )
1965-12-06
Automatic telephone exchange.
DK126750B
(en )
1973-08-13
Telecommunication and communication systems.
NL143394B
(en )
1974-09-16
COMMUNICATION SYSTEM.
NL140120B
(en )
1973-10-15
SPEAKING TELEPHONE.
NL159557B
(en )
1979-02-15
TELECOMMUNICATIONS CONNECTION SCHEME, IN PARTICULAR TELEPHONE CONNECTION SYSTEM.
GR29571B
(en )
1966-02-16
TELEPHONE SUBSCRIBERS INDEX.
BE619155A
(en )
1962-12-20
Signaling method for telecommunication, mainly telephone systems.
DK101992C
(en )
1965-06-21
Connecting equipment, in particular for telephone systems.
BE574887A
(en )
1959-07-20
Loudspeaker telecommunication system.