AT75593B
(en )
1919-02-25
Circuit arrangement for telephone systems with dialer operation.
AT75556B
(en )
1919-02-25
Circuit for telephone systems with dialer operation.
AT80147B
(en )
1920-02-25
Circuit arrangement for telephone systems with dialing circuit arrangement for telephone systems with dialer operation. in operation.
AT73118B
(en )
1917-02-26
Circuit arrangement for telephone systems with central battery operation.
AT80136B
(en )
1920-02-25
Circuit arrangement for telephone systems. Circuit arrangement for telephone systems.
AT71121B
(en )
1916-02-10
Circuit arrangement for telephone systems operated with voters.
AT68533B
(en )
1915-04-26
Circuit arrangement for telephone systems with semi-automatic operation.
DK20140C
(en )
1915-05-03
Selector switch for Telephone Systems.
AT69059B
(en )
1915-06-10
Circuit arrangement for telephone systems.
AT71117B
(en )
1916-02-10
Circuit arrangement for telephone systems.
AT75582B
(en )
1919-02-25
Cord circuit for telephone exchanges with central battery operation.
AT80097B
(en )
1920-02-25
Telephone dialer. Telephone dialer.
DK22408C
(en )
1917-09-03
Telephone station.
AT65751B
(en )
1914-07-25
Circuit for semi-automatic telephone systems.
AT80094B
(en )
1920-02-25
Semi-automatic telephone system. Semi-automatic telephone system.
AT82832B
(en )
1921-02-25
Telephone switching system.
AT73145B
(en )
1917-02-26
Circuit arrangement for telephone systems with ordinary extensions and extensions with state connection.
DK19678C
(en )
1915-01-04
Telephone system.
AT71048B
(en )
1916-01-25
Circuit arrangement of an additional feed device for long telephone connection lines with central battery operation.
AT71459B
(en )
1916-03-27
Circuit arrangement for telephone exchanges with semi-automatic operation.
AT80096B
(en )
1920-02-25
Selector for auto line telephone systems. Selector for auto line telephone systems.
DK18827C
(en )
1914-05-18
Circuit Device for Telephone Systems.
ES58374A1
(en )
1914-10-16
Telephone.
AT75551B
(en )
1919-02-25
Telephone circuit.
AT72189B
(en )
1916-07-25
Circuit arrangement for telephone systems with automatic or semi-automatic operation.