DK32296C
(en )
1923-09-24
Audio receiver for wireless Telegraphy and Telephony.
DK32036C
(en )
1923-07-30
Device for Antennas for Wireless Telegraphy and Telephony.
DK27638C
(en )
1921-05-17
Receiver for wireless Telegraphy.
DK32568C
(en )
1923-12-03
Procedure and Device for Affecting Incoming Wireless Signals.
DK24551C
(en )
1919-05-19
Audio amplifier for Telephones and the like.
AT98606B
(en )
1924-11-25
Receiving device for wireless telegraphy or telephony.
DK24502C
(en )
1919-05-12
Reception system for wireless Telephony.
DK33125C
(en )
1924-04-22
Transmission system for High Frequency Telegraphy and the like.
DK35183C
(en )
1925-10-26
Pipe transmitter connection for wireless Telegraphy and Telephony.
DK24869C
(en )
1919-08-18
Transmitter for Radio Telegraph Stations.
DK21914C
(en )
1917-02-19
Transmitter device for wireless Telegraphy and Telephony.
DK29853C
(en )
1922-07-03
Transmitter for Wireless Telegraphy.
ES71809A1
(en )
1920-03-01
Broadcast station for telegraphy and wireless telephony.
DK30997C
(en )
1922-12-27
Telegraphic Receiver.
DK33136C
(en )
1924-04-28
Connecting device for multiplex telegraphy and multiplex telephony with high frequency on wires.
DK21830C
(en )
1917-01-22
Transmission Station for Wireless Telegraphy and Telephony.
DK33771C
(en )
1924-10-20
Transmission and Receiving System for Radio Telegraphy.
DK33189C
(en )
1924-05-12
Antenna system for wireless Telegraphy.
DK30715C
(en )
1922-11-20
Telephone Sound Box for Dictaphones, Telephographers and similar Devices.
AT96060B
(en )
1924-02-25
Device for wireless transmission of telephone and telegraph signals.
FR615741A
(en )
1927-01-14
Pavilion for acoustic headphones of phonographs, telegraphs, telephones, radio telegraphs and radio telephones, etc.
ES72354A1
(en )
1920-04-09
Signals on radio telegraph devices.
DK29050C
(en )
1921-12-19
Holding device for Telephones, Hearing Tubes and the like.
ES69916A1
(en )
1919-07-01
Methods and apparatus for radio telegraphic signals.
DK32835C
(en )
1924-02-11
Transmitter for Wireless Telephony.