CH207143A
(en )
1939-09-30
Radio receiver.
FR833743A
(en )
1938-10-28
Radio transmission systems
CH206319A
(en )
1939-07-31
Radio receiver with fully automatic tuning.
DK57197C
(en )
1940-01-29
Radio receiver with optical Tuning indicator.
DK57834C
(en )
1940-07-29
Radio reception switch with optical Tuning indicator.
DK58769C
(en )
1941-06-16
Radio receiver with automatic Tuning.
DK59105C
(en )
1941-10-13
Radio receiver with mechanical tuning system.
CH207285A
(en )
1939-10-15
Radio receiver.
CH208100A
(en )
1939-12-31
Radio receiver.
FR752130A
(en )
1933-09-16
Superheterodyne receiver
FR756082A
(en )
1933-12-04
Radio receiver
DK55951C
(en )
1939-03-20
Radio receiver with automatic Tuning.
CH206320A
(en )
1939-07-31
Radio receiver with completely automatic tuning.
CH208103A
(en )
1939-12-31
Radio receiver with fully automatic tuning.
CH202675A
(en )
1939-01-31
Intermediate frequency heterodyne receiving circuit with automatic tuning correction.
CH207284A
(en )
1939-10-15
Radio receiver.
CH202378A
(en )
1939-01-15
Radio receiver.
DK59483C
(en )
1942-02-16
Radio receiver with automatic Tuning.
DK57432C
(en )
1940-04-01
Radio receiver with automatic Tuning.
DK57587C
(en )
1940-05-14
Superheterodyne receiver with sliding Intermediate Frequency.
DK55063C
(en )
1938-08-08
Radio receiver with variable Selectivity.
CH207429A
(en )
1939-10-31
Television receiver.
DK58465C
(en )
1941-03-03
Radio receiver with automatic Volume control.
DK56804C
(en )
1939-10-16
Device for Radio Receivers with Reflective Coupling.
FR831512A
(en )
1938-09-07
Advanced radio receiver