AT75596B
(en )
1919-02-25
Circuit arrangement for telephone systems with call seekers.
AT23616B
(en )
1906-03-26
Circuit arrangement for telephone systems with main and secondary units.
AT43909B
(en )
1910-09-10
Circuit arrangement for automatic telephone systems.
FR345554A
(en )
1904-12-05
Telephone systems
DK6443C
(en )
1904-03-28
Telephone Memorandum.
AT25443B
(en )
1906-08-25
Automatic telephone switch.
CH33516A
(en )
1905-12-31
Self-collecting telephone system
DK7171C
(en )
1904-12-19
Telephone connection device.
AT24623B
(en )
1906-06-25
Telephone relay.
DK4829C
(en )
1902-06-09
Devices for Telephone Systems with Common Return.
AT62699B
(en )
1913-12-27
Circuit arrangement for automatic telephone systems.
AT25137B
(en )
1906-07-25
Station indicator.
FR340435A
(en )
1904-07-06
Telephone transmitter
AT23760B
(en )
1906-04-10
Circuit arrangement for telephone systems with secondary microphone batteries at the participants.
CH30269A
(en )
1904-11-30
Telephone system with closed-circuit operation
ES34179A1
(en )
1904-08-01
An electrical annunciator.
DK7259C
(en )
1905-01-30
Device by Telephone Systems.
ES35115A1
(en )
1905-01-16
An electro-medicinal accessory.
FR348401A
(en )
1905-04-12
Telephone receiver
FR347179A
(en )
1905-02-27
Telephone receiver
CH31257A
(en )
1905-03-31
Telephone receiver
CH31675A
(en )
1905-05-15
Telephone system based on the so-called line dialer system
AT23659B
(en )
1906-03-26
Automatic rifle.
AT26103B
(en )
1906-10-25
Automatic firearm.
DK7239C
(en )
1905-01-23
Central switching device for Telephone Systems.