AT75559B
(en )
1919-02-25
Impulse transmitter for fully automatic telephone stations.
AT63771B
(en )
1914-03-10
Impulse transmitter for automatic telephone systems.
DK22408C
(en )
1917-09-03
Telephone station.
FR480158A
(en )
1916-06-29
Automatic telephony communication system
CH69568A
(en )
1915-07-01
Transmitter for telephone lines
AT75556B
(en )
1919-02-25
Circuit for telephone systems with dialer operation.
DK20280C
(en )
1915-06-28
Power Shock Transmitter for Automatic Phones.
ES65100A1
(en )
1917-09-01
A telephone transmitter.
AT75593B
(en )
1919-02-25
Circuit arrangement for telephone systems with dialer operation.
CH63713A
(en )
1914-02-16
Pulse transmitter for automatic telephone systems
AT75581B
(en )
1919-02-25
Telephone station with dialing device for self-connection for automatic telephone exchanges.
FR489694A
(en )
1919-03-01
Telephone transmitter
FR523793A
(en )
1921-08-25
Telephone transmitter
FR483939A
(en )
1917-08-21
Telephone transmitter
CH70841A
(en )
1915-11-01
Self-collecting telephone station
AT80097B
(en )
1920-02-25
Telephone dialer. Telephone dialer.
ES59377A1
(en )
1915-01-16
A transmitter for telephone lines.
AT91074B
(en )
1923-01-25
Impulse transmitter.
CA170854A
(en )
1916-07-18
Telephone impulse transmitter
DK21931C
(en )
1917-02-19
Automatic Telephone System.
AT80094B
(en )
1920-02-25
Semi-automatic telephone system. Semi-automatic telephone system.
FR487168A
(en )
1918-06-12
Automatic telephone system
FR487336A
(en )
1918-06-25
Automatic telephone system
ES61074A1
(en )
1915-11-16
A handset with a rover receiver.
AT82883B
(en )
1921-02-25
Automatic telephone system.