AT63202B
(en )
1914-01-26
Selector for automatic or semi-automatic telephone switching devices.
CH67819A
(en )
1915-01-16
Selector arrangement for telephone switching devices with automatic or semi-automatic operations
CH67820A
(en )
1915-01-16
Selector arrangement for telephone switching devices with automatic or semi-automatic operations
CH69081A
(en )
1915-05-17
Selector switch for automatic or semi-automatic telephone systems
CH59283A
(en )
1913-05-16
Switching for automatic or semi-automatic telephone systems
CH68410A
(en )
1915-03-16
Line arrangement for automatic or semi-automatic telephone systems
AT72189B
(en )
1916-07-25
Circuit arrangement for telephone systems with automatic or semi-automatic operation.
CH68008A
(en )
1915-02-01
Selector for automatic or semi-automatic telephone systems
FR455718A
(en )
1913-08-07
Special selector for automatic telephone switches
CH74492A
(en )
1917-03-01
Selector switch for telephone systems
AT91080B
(en )
1923-01-25
Electrical control system for automatic or semi-automatic telephone exchanges.
ES58741A1
(en )
1914-08-16
A connection device by means of selection for automatic or semi-automatic telephone installations.
CH67505A
(en )
1915-02-16
Automatic line selector
AT75552B
(en )
1919-02-25
Circuit arrangement for telephone systems with automatic or semi-automatic operation.
GB191322850A
(en )
1914-06-18
Improved Circuit Arrangements for Automatic Telephone Systems.
DK16820C
(en )
1912-12-23
Telephone system selector.
ES58002A1
(en )
1914-05-16
A conductor arrangement for automatic or semi-automatic telephone installations.
AT63771B
(en )
1914-03-10
Impulse transmitter for automatic telephone systems.
GB191306664A
(en )
1913-12-18
Improved Circuit Arrangements for Semi-automatic Telephone Systems.
FR462131A
(en )
1914-01-20
Selector for automatic or semi-automatic telephone switching systems
CH63680A
(en )
1914-02-16
Automatic switching device for step resistance
CH63714A
(en )
1914-02-16
Selector for automatic telephone switches
AT69059B
(en )
1915-06-10
Circuit arrangement for telephone systems.
AT71117B
(en )
1916-02-10
Circuit arrangement for telephone systems.
FR479204A
(en )
1916-03-01
Automatic or semi-automatic telephone