DK24373C
(en )
1919-04-14
Receiver for Wireless Telegraphs and Telephones.
DK21830C
(en )
1917-01-22
Transmission Station for Wireless Telegraphy and Telephony.
DK33051C
(en )
1924-04-07
High Frequency Machine Transmitter for Wireless Telegraphy and Telephony.
DK21914C
(en )
1917-02-19
Transmitter device for wireless Telegraphy and Telephony.
DK20247C
(en )
1915-06-21
Receiving device for wireless Telegraphy.
FR492572A
(en )
1919-07-11
Telephone transmitter and receiver
DK31479C
(en )
1923-03-26
Wireless Signaling Procedure and System.
CA174361A
(en )
1917-01-09
Wireless telegraph and telephone system
DK30413C
(en )
1922-10-09
High frequency generator, especially useful for Radio Telegraphy and Radio Telephony.
AT75587B
(en )
1919-02-25
Receiving arrangement for wireless telegraphy or telephony.
FR478148A
(en )
1915-11-24
Loudspeaker telephone receiver
CH88841A
(en )
1921-04-01
Portable wireless telegraph station.
AT82879B
(en )
1921-02-25
Directional wireless telegraphy and telephony facility.
DK19552C
(en )
1914-11-30
Transmitter for Wireless Telegraphy.
DK22408C
(en )
1917-09-03
Telephone station.
ES65713A1
(en )
1917-12-16
A wireless telegraphy and telephone system.
DK21019C
(en )
1916-02-21
Device for Receiving Devices for Wireless Telegraphy and Telephony.
DK24276C
(en )
1919-03-24
Coupling device for Sending and Receiving devices for wireless Telegraphy and Telephoning.
ES61048A1
(en )
1915-11-16
A calling device for a wireless telegraph or telephony station using acoustic or light signals.
DK24991C
(en )
1919-09-08
Hammer switch for radio telegraphy and similar purposes.
DK13568C
(en )
1910-08-22
Transmitting and Receiving Antenna for Wireless Telegraphy Devices.
CA158684A
(en )
1914-11-03
Wireless telegraph receiver
AT63593B
(en )
1914-02-25
Receiving device for wireless telegraphy and telephony.
FR23871E
(en )
1921-12-13
Telegraph transmitter
DK33138C
(en )
1924-04-28
Device for Combined Transmission and Receipt of Electrical Oscillations for Wireless Telephony.