DK21019C
(en )
1916-02-21
Device for Receiving Devices for Wireless Telegraphy and Telephony.
DK21914C
(en )
1917-02-19
Transmitter device for wireless Telegraphy and Telephony.
DK21830C
(en )
1917-01-22
Transmission Station for Wireless Telegraphy and Telephony.
DK24991C
(en )
1919-09-08
Hammer switch for radio telegraphy and similar purposes.
DK32036C
(en )
1923-07-30
Device for Antennas for Wireless Telegraphy and Telephony.
DK33138C
(en )
1924-04-28
Device for Combined Transmission and Receipt of Electrical Oscillations for Wireless Telephony.
DK30413C
(en )
1922-10-09
High frequency generator, especially useful for Radio Telegraphy and Radio Telephony.
DK24276C
(en )
1919-03-24
Coupling device for Sending and Receiving devices for wireless Telegraphy and Telephoning.
DK39069C
(en )
1928-07-30
Receiving device for wireless Telegraphy and Telephony with Frame antenna.
DK33051C
(en )
1924-04-07
High Frequency Machine Transmitter for Wireless Telegraphy and Telephony.
DK32296C
(en )
1923-09-24
Audio receiver for wireless Telegraphy and Telephony.
DK24373C
(en )
1919-04-14
Receiver for Wireless Telegraphs and Telephones.
DK27567C
(en )
1921-05-09
Receiving device for use in radio telegraphy and telephony.
DK35177C
(en )
1925-10-26
High Frequency Telephony Device.
ES65332A1
(en )
1917-10-16
Telephone or telegraph switch.
AT82879B
(en )
1921-02-25
Directional wireless telegraphy and telephony facility.
ES58402A1
(en )
1914-07-16
Improvements in antennas for telegraphy and wireless telephony.
DK31254C
(en )
1923-02-05
Magnetic Amplifier, especially for Wireless Telephony.
DK40519C
(en )
1929-07-22
Receiving device for wireless Telegraphy.
DK29751C
(en )
1922-06-19
Retractable Antenna for Wireless Telegraphy.
AT75587B
(en )
1919-02-25
Receiving arrangement for wireless telegraphy or telephony.
DK20247C
(en )
1915-06-21
Receiving device for wireless Telegraphy.
AT80154B
(en )
1920-02-25
Cooling device for electrodes, especially from S-cooling device for electrodes, especially from serial spark gaps for wireless telegraphy. spark gaps for wireless telegraphy.
AT98598B
(en )
1924-11-25
Antenna arrangement for wireless telegraphy.
DK30065C
(en )
1922-08-14
Directional antenna for wireless Telegraphy.