AT62360B
(en )
1913-12-10
Circuit arrangement for traffic between several telephone exchanges equipped with automatic dialers.
AT49847B
(en )
1911-09-11
Telephone station with dialing device for self-connection for automatic telephone exchanges.
AT68425B
(en )
1915-04-10
Circuit arrangement for telephone exchanges with automatic call distribution.
AT64215B
(en )
1914-04-10
Hoop guide.
AT49075B
(en )
1911-07-25
Automatic telephone dialer.
AT62688B
(en )
1913-12-27
Circuit arrangement for telephone exchanges with automatic call distribution.
AT70550B
(en )
1915-11-25
Circuit arrangement for telephone exchanges with automatic call distribution.
AT74343B
(en )
1918-05-10
Self-collecting telephone station.
AT56997B
(en )
1912-12-27
Automatic telephone dialer.
AT74845B
(en )
1918-10-25
Circuit arrangement for telephone systems.
AT74834B
(en )
1918-10-25
Circuit arrangement for telephone systems with amplifying devices for the voice streams.
AT72187B
(en )
1916-07-25
Circuit arrangement for automatic or semi-automatic telephone systems with separate adjustment and speech channels.
AT79130B
(en )
1919-11-10
Selector without zero position for telephone systems.
AT74825B
(en )
1918-10-25
Telephone switching system.
AT72186B
(en )
1916-07-25
Circuit arrangement for automatic or semi-automatic telephone systems with separate adjustment and speech channels.
AT72342B
(en )
1916-08-25
Circuit arrangement for intermediate switch for automatic or semi-automatic telephone exchanges with central battery operation.
AT76292B
(en )
1919-04-25
Thermal telephone.
AT56229B
(en )
1912-11-11
Circuit arrangement for automatic telephone systems.
AT66856B
(en )
1914-10-26
Telephone amplification apparatus.
AT64681B
(en )
1914-05-11
Switching arrangement for automatic or semi-automatic telephone systems with group division.
AT49071B
(en )
1911-07-25
Switching device for setting voters in automatic telephone exchanges.
AT74058B
(en )
1917-12-10
Semi-automatic chain pulling machine.
AT74045B
(en )
1917-12-10
Circuit arrangement for automatically or semi-automatically operated telephone systems with separate setting and speech connection paths.
AT72181B
(en )
1916-07-25
Circuit arrangement for private branch exchanges with several trunk lines.
AT73763B
(en )
1917-09-10
Automatic time switch.