CH260442A
(en )
1949-03-15
Demodulator for telegraph carrier waves.
FR951032A
(en )
1949-10-13
Radio receiver systems
CH270139A
(en )
1950-08-15
Pressure telegraph receiver.
DK77239C
(en )
1954-03-08
Oven system.
DK68943C
(en )
1949-04-19
Receiving connection for carrier frequency telegraph systems with variable level.
CH271780A
(en )
1950-11-15
Telegraph Receiver.
CH235396A
(en )
1944-11-30
Carrier frequency system.
CH247357A
(en )
1947-02-28
Radio receiver.
CH254962A
(en )
1948-05-31
Superposition receiver with selective amplification of the carrier wave.
DK68476C
(en )
1949-01-31
Signal receiver for carrier frequency systems.
DK68161C
(en )
1948-12-20
Signal receiver, in particular call receiver for carrier frequency systems.
DK68887C
(en )
1949-04-11
Coupling for transmission of telegraph characters in variable frequency telegraph systems.
CH242056A
(en )
1946-04-15
Signal receiver for carrier wave telephony systems.
CH265063A
(en )
1949-11-15
Overlay Receiver.
DK67184C
(en )
1948-07-12
Receiver for Systems for AC Telegraphy with Phase Leap.
FR950341A
(en )
1949-09-23
Secret communication system
CH241315A
(en )
1946-02-28
Transmission system with several repeaters.
DK69068C
(en )
1949-05-02
Bearing receiver with an amplitude limitation step for bearing systems where frequency modulated electromagnetic waves are used.
DK65360C
(en )
1947-01-27
High frequency transmission line.
DK80558C
(en )
1956-02-20
Surveillance signal systems, in particular for use in telegraph systems.
DK76239C
(en )
1953-08-17
Radio beacon system.
CH246848A
(en )
1947-01-31
Telecommunication system.
CH253347A
(en )
1948-02-29
High frequency furnace system.
DK73074C
(en )
1951-09-17
Overlay receiver.
DK70399C
(en )
1949-12-27
Coupling for transmitting calls in message transmission systems, in particular with several carrier frequency channels.