CH226583A
(en )
1943-04-15
Decimeter wave transmitter.
CH260442A
(en )
1949-03-15
Demodulator for telegraph carrier waves.
CH265359A
(en )
1949-11-30
Frequency-keyed telegraph transmitter.
CH260615A
(en )
1949-03-31
Radio guide beacon, in which the amplitudes of two signals are to be compared at the receiving end.
FR937961A
(en )
1948-09-01
Remote indicator device, especially by radio signals
CH259614A
(en )
1949-01-31
Pulse time modulator for a multi-channel system.
CH238600A
(en )
1945-07-31
Device for receiving signals that are transmitted by means of a pulse-modulated carrier wave.
CH231617A
(en )
1944-03-31
Device for the transmission of signals by means of a frequency-modulated carrier wave.
CH235396A
(en )
1944-11-30
Carrier frequency system.
CH245850A
(en )
1946-11-30
Device for receiving signals transmitted by means of a carrier wave modulated by successive pulses of variable duration.
CH263746A
(en )
1949-09-15
Device for transmitting different speeds.
BE578845Q
(en )
1959-09-16
Device for drums driven by friction.
CH241789A
(en )
1946-03-31
Circuit for frequency modulating a carrier wave.
AT168555B
(en )
1951-06-25
System for the transmission of telephony signals by means of modulated carrier waves
CH256364A
(en )
1948-08-15
Method for the transmission of tactile characters by means of frequency-modulated carrier waves
FR992673A
(en )
1951-10-22
Electro-hydraulic braking device, especially for heavy vehicles
FR980335A
(en )
1951-05-10
Improvements made to ratchets for lifting devices, traction etc.
CH223440A
(en )
1942-09-15
Receiving device for tactile signals transmitted at carrier frequencies.
CH224080A
(en )
1942-10-31
Receiving device for tactile signals transmitted at carrier frequencies.
DK64557C
(en )
1946-06-17
Puree press.
FR978958A
(en )
1951-04-20
Hydraulic adjustment device for machines, especially turbines
CH246390A
(en )
1946-12-31
Apparatus for transmitting electrical signals.
FR916548A
(en )
1946-12-09
Carrier wave telegraph transmitter
FR895240A
(en )
1945-01-18
Improvements to directed antennas, for very short electric waves
DK63055C
(en )
1944-12-27
Device by hydraulic presses.