CH59526A
(en )
1913-06-02
Induction coil transmitter for wireless telegraphy
FR465153A
(en )
1914-04-09
Coupling coil for wireless telegraphy transmitter
FR473277A
(en )
1915-01-07
Wireless telegraphy wave detector
FR465154A
(en )
1914-04-09
Tuning coil for wireless telegraphy receiver
CH59525A
(en )
1913-05-16
Wireless telegraphy transmitter
FR470637A
(en )
1914-09-19
Transmitter for wireless telegraphy
FR463664A
(en )
1914-03-02
Call bell for wireless telegraphy
FR468230A
(en )
1914-07-01
Wireless telegraphy receiver
FR436000A
(en )
1912-03-14
Oscillating arc auto-switch for induction coil
FR469286A
(en )
1914-07-28
Spark gap for wireless telegraphy
FR469290A
(en )
1914-07-28
Transmission apparatus for wireless telegraphy
FR455805A
(en )
1913-08-09
Crystal detector for wireless telegraphy
FR465155A
(en )
1914-04-09
Crystal detector for wireless telegraphy
FR476835A
(en )
1915-09-02
Receiver for wireless telephony
FR438816A
(en )
1912-05-29
Radiotelegraph receiver for telegraphy and wireless telephony
FR420452A
(en )
1911-01-31
Transmitter device for wireless telegraphy
FR475249A
(en )
1915-04-26
Improvement of induction tuning devices used in wireless telegraphy
FR469443A
(en )
1914-07-31
Crystals for detector of wireless telegraphy apparatus
CH54389A
(en )
1912-05-17
Magnetic inductor
FR422903A
(en )
1911-04-03
Adjustment device for induction coils
FR446257A
(en )
1912-11-30
Receiving apparatus for wireless telegraphy
FR411728A
(en )
1910-06-24
Milk jug
FR521389A
(en )
1921-07-11
Installation for wireless telegraphy electric wave post
FR470366A
(en )
1914-09-08
Device for transforming alternating electric currents into sound vibrations, using resonators tuned to different frequencies
FR472961A
(en )
1914-12-26
Transmitting station for telegraphy and wireless telephony