DK57307C
(en )
1940-02-26
Device by Receivers for Selective Receipt of Electric Waves.
DK54468C
(en )
1938-03-14
Apparatus for Receiving Sound Waves.
DK56459C
(en )
1939-07-24
Device for Radio Receivers for the Removal of Cracking Noise.
DK45622C
(en )
1932-05-02
Device by Radio Receivers.
DK46310C
(en )
1932-10-10
Device by Radio Receivers.
DK46212C
(en )
1932-09-19
Device for Radio Receivers.
DK56624C
(en )
1939-09-04
Device for Radio Receivers for Indicating the Right Tune.
CH206317A
(en )
1939-07-31
Frequency conversion device.
DK47476C
(en )
1933-06-26
Device by Radio Receivers.
DK48063C
(en )
1933-11-27
Device by Radio Receivers.
DK53823C
(en )
1937-11-08
Device for High Frequency Generators.
DK49933C
(en )
1935-02-25
Device for Radio Receivers for Elimination of Unwanted Frequencies.
DK46975C
(en )
1933-02-20
Device for Superheterodyne Receivers for Suppressing Interfering Signal Fluctuations.
DK46309C
(en )
1932-10-10
Device for Adjusting the Volume of Radio Receivers.
FR825664A
(en )
1938-03-10
Radio reception method
DK55640C
(en )
1939-01-02
Device by an Electric Circuit for Reducing Capacitive Couplings.
DK54292C
(en )
1938-02-07
Device by River.
DK55978C
(en )
1939-03-27
Tuning mechanism for Radios.
DK60742C
(en )
1943-03-29
Tuning device for Radio Receivers.
DK56568C
(en )
1939-08-21
Device for Superheterodyne Receivers.
FI18059A
(en )
1938-04-29
Anti-foaming device for separators
DK59273C
(en )
1941-12-08
Tuning device for Radio Receivers.
DK54547C
(en )
1938-04-04
Braking device at Radio receiver system.
DK48485C
(en )
1934-03-12
Device by Speakers.
DK54009C
(en )
1937-12-13
Procedure for the manufacture of insulation mats.