DK68057C
(en )
1948-12-06
Coupling at Automatic Telephone Systems for Dispatching a Queue of Telephone Calls.
CH289854A
(en )
1953-03-31
Automatic telephone installation.
DK68721C
(en )
1949-03-14
Coupling at automatic telephone systems for registration of telephone numbers of wires.
CH276280A
(en )
1951-06-30
Automatic telecommunication installation.
DK76962C
(en )
1954-01-11
Coupling device for automatic telephone systems.
CH262449A
(en )
1949-06-30
Automatic telephone system.
DK75605C
(en )
1953-03-23
Device for automatic telephone systems.
CH257252A
(en )
1948-09-30
Device for initiating operations through telephone calls.
DK64813C
(en )
1946-09-23
Coupling for automatic Telephone systems with Coordinate dialers.
DK71271C
(en )
1950-07-24
Coupling device for automatic telephone systems.
DK77276C
(en )
1954-03-22
Coupling to automatic telephone exchanges for sending out automatically repeated ringtones.
CH259613A
(en )
1949-01-31
Automatic call device for telephone.
DK80356C
(en )
1956-01-02
Coupling device to prevent accidental calls.
IE17613L
(en )
1945-02-28
Automatic telephone switching systems.
DK67232C
(en )
1948-07-19
Electromagnetic Relay, especially for Telephone Systems.
FR914757A
(en )
1946-10-17
Device for disconnecting false calls in automatic telephony
IE18866L
(en )
1945-11-01
Automatic telephone exchange systems.
IE18909L
(en )
1945-11-15
Automatic telephone exchange systems.
IE18865L
(en )
1945-11-01
Automatic telephone exchange systems.
IE18864L
(en )
1945-11-01
Automatic telephone exchange systems.
IE18849L
(en )
1945-10-21
Automatic telephone exchange systems.
IE18848L
(en )
1945-10-21
Automatic telephone exchange systems.
DK75398C
(en )
1953-02-09
Device for automatic telephone systems.
DK83455C
(en )
1957-09-23
Dispatch location for telephone exchange systems for operating remote connections.
AU127308B2
(en )
1948-04-22
Automatic telephone systems