AT61015B
(en )
1913-09-10
Equipment for telegraphy and telephony on submarine cables or long overground transmission lines.
AT70462B
(en )
1915-11-10
Wireless telegraph system on submarines.
AT49913B
(en )
1911-09-25
Mast for wireless telegraphy, signaling and other purposes.
AT75295B
(en )
1919-01-25
Device for selective calling of telephone stations lying on a common line or the like.
AT70559B
(en )
1915-11-25
Antenna arrangement at transmitting stations for wireless telegraphy and telephony.
AT56933B
(en )
1912-12-27
Entry isolator for telegraph and telephone lines.
AT74834B
(en )
1918-10-25
Circuit arrangement for telephone systems with amplifying devices for the voice streams.
AT74347B
(en )
1918-05-10
Circuit arrangement for telephone exchanges which can be used preferably on warships.
AT66432B
(en )
1914-08-25
Circuit arrangement for high-frequency machines, in particular for wireless telegraphy and telephony.
AT49075B
(en )
1911-07-25
Automatic telephone dialer.
AT66384B
(en )
1914-08-25
Morse telegraph.
AT66856B
(en )
1914-10-26
Telephone amplification apparatus.
AT56229B
(en )
1912-11-11
Circuit arrangement for automatic telephone systems.
AT74343B
(en )
1918-05-10
Self-collecting telephone station.
AT74845B
(en )
1918-10-25
Circuit arrangement for telephone systems.
AT97871B
(en )
1924-09-10
Equipment for high-frequency telegraphy and telephony on power networks.
AT74825B
(en )
1918-10-25
Telephone switching system.
AT82259B
(en )
1920-12-27
Handset for telephones and microphones.
AT71457B
(en )
1916-03-27
Telegraph system.
AT50093B
(en )
1911-10-10
Handset.
AT35868B
(en )
1909-01-11
Electrical signal transmitter and receiver.
AT74045B
(en )
1917-12-10
Circuit arrangement for automatically or semi-automatically operated telephone systems with separate setting and speech connection paths.
AT87777B
(en )
1922-03-27
Siguslan arrangement for telephone systems.
AT48359B
(en )
1911-06-10
Hydro-electric multi-cell bath.
AT75742B
(en )
1919-03-10
Circuit arrangement for automatically or semi-automatically operated telephone systems.