DK47713C
(en )
1933-09-04
Device for Volume Control for Radio Receivers and High Frequency Amplifiers.
DK47657C
(en )
1933-08-21
Automatic volume control device for Radio Receivers and High Frequency Amplifiers.
DK47674C
(en )
1933-08-21
Device for Volume Control for Radio Receivers and High Frequency Amplifiers.
DK50650C
(en )
1935-09-16
Device for Radio Receivers and similar Devices for combined Sound and Volume Control.
DK51135C
(en )
1936-01-13
Device for Radio Receivers and Other High Frequency Amplifiers for Selectivity Control.
FR762941A
(en )
1934-04-20
Radio frequency amplifiers
DK51911C
(en )
1936-07-20
Device for Radio Receivers and other High Frequency Amplifiers for Automatic Sensitivity Control.
DK51910C
(en )
1936-07-20
Device for Radio Receivers and other High Frequency Amplifiers for Automatic Sensitivity Control.
DK48472C
(en )
1934-03-05
Device for radio receivers, amplifiers and the like.
DK57490C
(en )
1940-04-15
Device for Tuning Elements for Radio Receivers and Other High Frequency Amplifiers.
DK47327C
(en )
1933-05-15
Device for Tuning Circuits for High Frequency Amplifiers and Radios.
DK48108C
(en )
1933-12-04
Device for Tuning Circuits for High Frequency Amplifiers and Radios.
DK59346C
(en )
1941-12-29
Device for Radio Receivers and Amplifiers for Automatic Bandwidth Adjustment.
DK62961C
(en )
1944-12-04
Volume control device for Radio Receivers and Amplifiers.
DK48416C
(en )
1934-02-19
Device for Suppression of Background Noise in Radio Devices and High Frequency Amplifiers.
DK58388C
(en )
1941-02-03
Device for Radio Receivers and other High Frequency Amplifiers with Automatic Gain Control.
DK51548C
(en )
1936-04-20
Automatic Volume control device for Radio Receivers and other Amplifiers of electrical Oscillations.
DK46253C
(en )
1932-09-26
Device for Transformers for Low Frequency Amplifiers.
DK48578C
(en )
1934-04-03
Input oscillation circuit device for Radio receivers.
DK46567C
(en )
1932-11-28
Device for Radio Receivers or other tunable High Frequency Amplifiers.
DK50608C
(en )
1935-09-02
Device for High Frequency Transformers in Radio Receivers or Other High Frequency Amplifiers.
DK56773C
(en )
1939-10-09
Display device for radio transmitters and radio receivers.
DK48169C
(en )
1933-12-18
Device for Noise Compensators for Radio Devices.
DK50580C
(en )
1935-08-26
Tuning device for High Frequency Current Devices, in particular Radio Devices.
DK41580C
(en )
1930-02-03
Device for radio transmitters and radio receivers.