CH59283A
(en )
1913-05-16
Switching for automatic or semi-automatic telephone systems
AT62699B
(en )
1913-12-27
Circuit arrangement for automatic telephone systems.
AT65751B
(en )
1914-07-25
Circuit for semi-automatic telephone systems.
CH54232A
(en )
1912-05-01
Automatic telephone dialer
AT71117B
(en )
1916-02-10
Circuit arrangement for telephone systems.
AT69059B
(en )
1915-06-10
Circuit arrangement for telephone systems.
CH56248A
(en )
1912-10-16
Installation in automatic telephone systems
CH54046A
(en )
1912-05-01
Installation in automatic telephone systems
CH56249A
(en )
1912-11-01
Installation in automatic telephone systems
FR433968A
(en )
1912-01-20
Automatic telephony installations
CH57659A
(en )
1913-03-01
Device for semi-automatic telephone systems
CH68410A
(en )
1915-03-16
Line arrangement for automatic or semi-automatic telephone systems
CH59524A
(en )
1913-06-02
Arrangement for automatic telephone systems
CH53676A
(en )
1912-03-16
Number switch for automatic telephone exchange
CH74492A
(en )
1917-03-01
Selector switch for telephone systems
CH55448A
(en )
1912-08-16
Call counting device for telephone systems
CH52337A
(en )
1911-11-16
Call counting device for telephone systems
NL3846C
(en )
1919-06-20
Automatic telephone system
AT71599B
(en )
1916-04-25
Circuit for section relay.
AT43518B
(en )
1910-08-10
Circuit arrangement for automatic telephone exchanges.
AT55320B
(en )
1912-09-10
Circuit arrangement for automatic telephone exchanges.
CH50724A
(en )
1911-06-16
Automatic firearm
CH53147A
(en )
1912-02-01
Braid for glues
FR420296A
(en )
1911-01-26
Provision for automatic telephone systems
CH63713A
(en )
1914-02-16
Pulse transmitter for automatic telephone systems