AT49847B
(en )
1911-09-11
Telephone station with dialing device for self-connection for automatic telephone exchanges.
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.
AT62360B
(en )
1913-12-10
Circuit arrangement for traffic between several telephone exchanges equipped with automatic dialers.
AT56997B
(en )
1912-12-27
Automatic telephone dialer.
AT68425B
(en )
1915-04-10
Circuit arrangement for telephone exchanges with automatic call distribution.
AT44977B
(en )
1910-11-10
Circuit arrangement for automatic telephone exchanges.
AT49075B
(en )
1911-07-25
Automatic telephone dialer.
AT49071B
(en )
1911-07-25
Switching device for setting voters in automatic telephone exchanges.
AT44976B
(en )
1910-11-10
Circuit arrangement for automatic telephone exchanges.
AT74343B
(en )
1918-05-10
Self-collecting telephone station.
AT79130B
(en )
1919-11-10
Selector without zero position for telephone systems.
AT56229B
(en )
1912-11-11
Circuit arrangement for automatic telephone systems.
AT50093B
(en )
1911-10-10
Handset.
AT72342B
(en )
1916-08-25
Circuit arrangement for intermediate switch for automatic or semi-automatic telephone exchanges with central battery operation.
AT23475B
(en )
1906-03-10
Circuit arrangement for telephone main stations.
AT31574B
(en )
1908-01-25
Timing and control device for long-distance traffic in telephone exchanges.
AT66856B
(en )
1914-10-26
Telephone amplification apparatus.
AT74845B
(en )
1918-10-25
Circuit arrangement for telephone systems.
AT75295B
(en )
1919-01-25
Device for selective calling of telephone stations lying on a common line or the like.
AT74834B
(en )
1918-10-25
Circuit arrangement for telephone systems with amplifying devices for the voice streams.
AT72181B
(en )
1916-07-25
Circuit arrangement for private branch exchanges with several trunk lines.
AT76292B
(en )
1919-04-25
Thermal telephone.
AT49072B
(en )
1911-07-25
Circuit for setting and switching dialers in automatic telephone systems.
AT62406B
(en )
1913-12-10
Flattening device for collars.