CH73044A
(en )
1916-08-01
Receiver system for wireless telegraphy and telephony
AT82879B
(en )
1921-02-25
Directional wireless telegraphy and telephony facility.
AT63593B
(en )
1914-02-25
Receiving device for wireless telegraphy and telephony.
AT75587B
(en )
1919-02-25
Receiving arrangement for wireless telegraphy or telephony.
AT89335B
(en )
1922-09-11
Radio frequency machine transmitters for wireless telegraphy and telephony.
AT98598B
(en )
1924-11-25
Antenna arrangement for wireless telegraphy.
CH88841A
(en )
1921-04-01
Portable wireless telegraph station.
CA172542A
(en )
1916-10-17
Radio telegraph and telephone apparatus
CA172543A
(en )
1916-10-17
Radio telegraph and telephone system
CA175489A
(en )
1917-03-06
Wireless telegraphy and telephone apparatus
DK24373C
(en )
1919-04-14
Receiver for Wireless Telegraphs and Telephones.
CH107497A
(en )
1924-11-01
Reception loop antenna for wireless telegraphy and telephony.
CA171903A
(en )
1916-09-12
Wireless telegraph receiver
DK21830C
(en )
1917-01-22
Transmission Station for Wireless Telegraphy and Telephony.
AT98606B
(en )
1924-11-25
Receiving device for wireless telegraphy or telephony.
FR478148A
(en )
1915-11-24
Loudspeaker telephone receiver
DK33051C
(en )
1924-04-07
High Frequency Machine Transmitter for Wireless Telegraphy and Telephony.
CA174361A
(en )
1917-01-09
Wireless telegraph and telephone system
FR464711A
(en )
1914-03-28
Wireless Telegraphy Telephone Receiver
AU33711B
(en )
1911-04-25
Aerial network for wireless telegraphy and telephony
CA171003A
(en )
1916-07-28
Apparatus for direcing wireless telegraphy and telephony
FR492572A
(en )
1919-07-11
Telephone transmitter and receiver
CA158684A
(en )
1914-11-03
Wireless telegraph receiver
CA151126A
(en )
1913-10-14
Receiver for wireless telegraphy or telephony
DK30413C
(en )
1922-10-09
High frequency generator, especially useful for Radio Telegraphy and Radio Telephony.