CH176978A
(en )
1935-05-15
Automatic rifle.
CH183492A
(en )
1936-04-15
Automatic firearm.
CH168769A
(en )
1934-04-30
Automatic firearm.
CH195998A
(en )
1938-02-28
Automatic firearm.
DK52365C
(en )
1936-11-30
High or Medium Frequency Amplifier with Automatic Gain Control.
DK48345C
(en )
1934-02-05
Distortion-free Amplifier coupling.
DK55339C
(en )
1938-10-17
Low Frequency Amplifier with Negative Feedback.
CH176389A
(en )
1935-04-15
Automatic firearm.
DK52330C
(en )
1936-11-16
Coupling with automatic Volume control for Amplification of High or Medium frequency oscillations.
DK51282C
(en )
1936-02-17
Low frequency amplifier.
DK52934C
(en )
1937-04-12
Amplifier with push-pull coupled Tubes.
CH162772A
(en )
1933-07-15
Automatic firearm.
DK57118C
(en )
1940-01-08
Receiver amplifier of the B-Class type.
DK59046C
(en )
1941-09-22
Radio receiver with automatic Gain control.
DK50538C
(en )
1935-08-12
Amplifier coupling with tunable Circuits.
DK50125C
(en )
1935-04-08
Coupling for Volume control of Amplifiers.
AT148664B
(en )
1937-02-25
Television receiving arrangement with intermediate frequency amplifier.
DK56251C
(en )
1939-06-06
High or Medium Amplifier.
AT160171B
(en )
1941-02-25
Distortion-free amplifier circuit.
ES139185A1
(en )
1935-11-01
An amplification control.
AT140661B
(en )
1935-02-25
Distortion-free amplifier.
DK51024C
(en )
1935-12-16
Receive coupling with feedback Detector amplifier.
DK51650C
(en )
1936-05-18
High or Medium Frequency Amplifier Coupling.
DK49867C
(en )
1935-02-11
High frequency gain coupling with Attenuation reduction.
DK50022C
(en )
1935-03-18
Device for Adjusting the Gain of an Amplifier Tube.