FR728683A
(en )
1932-07-09
Filter refinements
CH213354A
(en )
1941-01-31
Receiver for modulated high frequency oscillations.
DK48345C
(en )
1934-02-05
Distortion-free Amplifier coupling.
CH148425A
(en )
1931-07-31
Device for connecting furniture parts and the like.
FR762941A
(en )
1934-04-20
Radio frequency amplifiers
FR45731E
(en )
1935-11-18
Radio frequency amplification processes
DK46586C
(en )
1932-12-05
Low frequency amplifier.
DK49184C
(en )
1934-08-27
High frequency amplifier coupling.
CH211216A
(en )
1940-08-31
Circuit arrangement for frequency stabilization in the modulator stage in ultra-short wave transmitters.
CH203562A
(en )
1939-03-15
Circuit for amplifying modulated high-frequency oscillations.
CH220609A
(en )
1942-04-15
Television process for the carrier-frequency transmission of broad modulation frequency bands.
DK46721C
(en )
1933-01-02
Procedure and Device for the Manufacture of Wood Flour.
DK33004C
(en )
1924-03-24
Procedure for the manufacture of paper and the like.
DK36531C
(en )
1926-09-13
Radio high frequency transformer.
DK48926C
(en )
1934-06-25
Devices for the Elimination of Radio Interference.
CA297371A
(en )
1930-02-04
Radio-frequency amplifying circuit
CA306946A
(en )
1930-12-23
Radio frequency amplification
FR693257A
(en )
1930-11-18
Cremone refinements
DK57228C
(en )
1940-02-05
Stabilized High Frequency Amplifier.
DK50372C
(en )
1935-06-24
Procedure for the manufacture of fertilizers.
CH203268A
(en )
1939-02-28
Frequency converter.
ES143814A1
(en )
1937-09-01
A low frequency amplifier with negative feedback.
DK36154C
(en )
1926-06-28
Low Frequency Transformer for Use with Termion Amplifiers.
DK53933C
(en )
1937-11-29
Amplifier for high frequency electrical oscillations.
AT140661B
(en )
1935-02-25
Distortion-free amplifier.