AT54954B
(en )
1912-08-26
Circuit arrangement for dialers of self-connecting telephone systems.
AT65751B
(en )
1914-07-25
Circuit for semi-automatic telephone systems.
AT69059B
(en )
1915-06-10
Circuit arrangement for telephone systems.
AT71117B
(en )
1916-02-10
Circuit arrangement for telephone systems.
AT53526B
(en )
1912-05-10
Circuit for semi-automatic telephone exchanges.
FR423356A
(en )
1911-04-14
Telephone instruments
AT80136B
(en )
1920-02-25
Circuit arrangement for telephone systems. Circuit arrangement for telephone systems.
GB191307125A
(en )
1914-03-19
Improved Test Circuit Arrangements for Telephone Systems.
AT57761B
(en )
1913-02-25
Circuit arrangement for voltage reducers.
GB191317417A
(en )
1914-07-29
Improved Circuit Arrangements for Telephone Systems.
GB191321222A
(en )
1913-12-04
Improved Circuit Arrangements for Telephone Systems.
NL61C
(en )
1913-11-15
Switchboard connection terminal
AT75551B
(en )
1919-02-25
Telephone circuit.
CH54232A
(en )
1912-05-01
Automatic telephone dialer
CH57659A
(en )
1913-03-01
Device for semi-automatic telephone systems
AT81614B
(en )
1920-10-25
Telephone system.
AU959813B
(en )
1913-07-09
Improved circuit arrangements for telephone systems
CH57407A
(en )
1913-02-17
Telephone switchboard
AT52428B
(en )
1912-02-26
Membrane for telephones.
AT48831B
(en )
1911-07-10
Telephone.
AT75593B
(en )
1919-02-25
Circuit arrangement for telephone systems with dialer operation.
AT62699B
(en )
1913-12-27
Circuit arrangement for automatic telephone systems.
FR436383A
(en )
1912-03-26
Telephone receiver
AT43518B
(en )
1910-08-10
Circuit arrangement for automatic telephone exchanges.
AT55320B
(en )
1912-09-10
Circuit arrangement for automatic telephone exchanges.