CH232472A
(en )
1944-05-31
Relay station for the transmission of high frequency oscillations.
CH201133A
(en )
1938-11-15
Method and device for remote tuning of a receiving device.
CH217644A
(en )
1941-10-31
Method and arrangement for the transmission of television signals.
CH210447A
(en )
1940-07-15
Procedure and arrangement for frequency division.
CH205107A
(en )
1939-06-15
Method and device for the production of fiberglass.
CH207616A
(en )
1939-11-15
Method and circuit for the transmission of a frequency band over lines.
CH213354A
(en )
1941-01-31
Receiver for modulated high frequency oscillations.
CH213371A
(en )
1941-01-31
Process for the preparation of an imidazoline.
CH203561A
(en )
1939-03-15
Circuit for frequency multiplication of ultrashort waves.
CH213201A
(en )
1941-01-31
Method of promoting the growth of plants.
CH207426A
(en )
1939-10-31
Device for remote setting of a heterodyne receiver.
CH205377A
(en )
1939-06-15
Method and device for the simultaneous wireless transmission of several message signals.
CH176837A
(en )
1935-05-15
Method and device for applying a guarantee of origin to the leaves of plants intended for sale.
AT156039B
(en )
1939-04-25
Method and device for remote tuning of a receiving device.
CH212950A
(en )
1940-12-31
Procedure for voltage-controlled frequency change.
CH200856A
(en )
1938-10-31
Method for receiving oscillations of variable frequency.
CH201663A
(en )
1938-12-15
Method and device for the continuous conversion of coordinates.
CH220609A
(en )
1942-04-15
Television process for the carrier-frequency transmission of broad modulation frequency bands.
CH212742A
(en )
1940-12-15
Method and device for the transmission of messages.
AT140669B
(en )
1935-02-25
Circuit for achieving uniform amplification and selectivity over a wide frequency range.
FR805686A
(en )
1936-11-26
High frequency coupling circuits
CH189396A
(en )
1937-02-28
Method and device for the fermentation of solutions.
CH203818A
(en )
1939-03-31
Circuit to facilitate the tuning of a radio receiver.
FR748663A
(en )
1933-07-07
Cellular filter enhancements
CH203709A
(en )
1939-03-31
Process for the rasterization of pictorial originals.