FR34315E
(en )
1929-05-04
Improvements to telegraphy and wireless telephony antennas
FR635782A
(en )
1928-03-24
Improvements in telegraphy and wireless telephony devices
FR640044A
(en )
1928-07-04
Improvements in wireless telephony and telegraphy stations
FR638781A
(en )
1928-06-02
Improvements in wireless telephony and telegraphy receiving stations
FR678529A
(en )
1930-03-25
Improvements to antennas usable in telegraphy and wireless telephony
FR606557A
(en )
1926-06-16
Improvements in wireless telephony and telegraphy receiving stations
FR659974A
(en )
1929-07-05
Improvements in the assembly of wireless telephony and telegraphy stations
FR601219A
(en )
1926-02-25
Improvements in telegraph and wireless telephony stations
FR690565A
(en )
1930-09-23
Improvements to telegraphy and wireless telephony receivers
FR682106A
(en )
1930-05-23
Improvements in telegraphy and wireless telephony devices
FR669727A
(en )
1929-11-20
Improvements to telegraphy and wireless telephony receiving stations
FR649685A
(en )
1928-12-26
Improvements to telegraphy and wireless telephony receivers
FR653988A
(en )
1929-03-29
Improvements in radiotelephone communications
FR647204A
(en )
1928-11-21
Improvements in telegraphy and wireless telephony
FR642680A
(en )
1928-09-01
Improvements to electronic tubes used in telegraphy and wireless telephony and to electronic valves
FR38314E
(en )
1931-05-12
Improvements to telegraphy and wireless telephony transmitters
FR685268A
(en )
1930-07-08
Improvements to telegraphy and wireless telephony transmitters
FR624031A
(en )
1927-07-06
Improvements in wireless telegraphy and telephone receivers
FR639813A
(en )
1928-06-30
Aerial improvements for telegraphy and wireless telephony
FR649921A
(en )
1928-12-29
Portable receiver for wireless telegraphy and telephony
FR39154E
(en )
1931-10-21
Improvements to telegraphy and wireless telephony transmitters
FR644390A
(en )
1928-10-06
Wireless telephony receiver station
FR649874A
(en )
1928-12-28
Improvements to transmitters for telegraphy and wireless telephony
FR760220A
(en )
1934-02-19
Improvements in telegraphy and wireless telephony devices
FR652980A
(en )
1929-03-15
New frequency changer in telegraphy and wireless telephony