DK32465C
(en )
1923-11-05
Device at Radio Stations with High Frequency Generators.
AU1094819B
(en )
1919-12-23
Radio oscillation generator
ES71700A1
(en )
1920-03-01
Assembly for wireless telephony with high frequency alternator.
CH89133A
(en )
1921-05-02
Power switch.
ES71276A1
(en )
1919-12-01
Improvements in high frequency alternators.
ES71456A1
(en )
1920-01-28
Improvements in high frequency alternators.
DK24875C
(en )
1919-08-18
Device for generating high frequency electrical oscillations.
DK33502C
(en )
1924-08-04
Telephony device with high frequency oscillations.
DK26194C
(en )
1920-06-28
Device by Belt Collectors.
DK25397C
(en )
1919-12-29
Belt collector.
DK24222C
(en )
1919-03-17
Electromagnetic Power Transmission Apparatus.
ES71860A1
(en )
1920-03-16
New radio-telegraph station with multiple combinations.
AT90816B
(en )
1923-01-10
High voltage transformer for high frequency.
ES70955A1
(en )
1919-11-01
Portable field phone station.
DK26456C
(en )
1920-08-16
Power transmission.
ES71631A1
(en )
1920-02-16
Receiving devices for wireless telegraphy.
FR524838A
(en )
1921-09-10
Relous frequency selectors
DK24917C
(en )
1919-08-25
Device by Generators.
FR498887A
(en )
1920-01-24
Station indicator
DK28141C
(en )
1921-08-01
Device for high voltage insulators.
ES71086A1
(en )
1920-01-28
An electric lighter device.
DK33058C
(en )
1924-04-07
Device for Direction Receiving Electric Waves.
ES69893A2
(en )
1919-07-01
An announcing device.
ES70293A1
(en )
1919-08-01
Improvements in receiving apparatus for wireless telegraphy.
ES74292A1
(en )
1920-10-01
An improved procedure and its corresponding apparatus, to eliminate the disturbing vibrations of determined frequencies.