FR43009E
(en )
1934-01-25
Method of communication by means of high frequency waves
FR585623A
(en )
1925-03-04
Method for transmitting speech by means of high frequency waves
FR612231A
(en )
1926-10-19
Method and apparatus for oriented transmission and reception by means of electric waves
FR896312A
(en )
1945-02-19
Method of transmitting messages by means of frequency modulated carrier waves
FR647542A
(en )
1928-11-26
Method for radioelectric emission by equal waves
FR757011A
(en )
1933-12-19
Method for producing ultra-short waves by periodically exciting several conductors by means of oscillations of electrons between said conductors
FR586636A
(en )
1925-03-31
Method of frequency transformation for radiotelegraphy or telephony
FR565693A
(en )
1924-02-02
Method and apparatus for improving the determination of the direction of electromagnetic waves
FR539613A
(en )
1922-06-28
Method and apparatus for remote transmission of moving images
FR609393A
(en )
1926-08-13
Improvements to receiving devices for the detection of signal waves transmitted by means of high frequency carrier waves
FR547313A
(en )
1922-12-07
Method and device for producing photograms of sound waves
FR785967A
(en )
1935-08-23
Method and device for the production of short waves
FR524961A
(en )
1921-09-13
Method and apparatus for determining the direction of waves
FR717046A
(en )
1931-12-31
Transformer-filter for amplifiers of t. s. f. high frequency waves
FR715655A
(en )
1931-12-05
Method for obtaining orthochromatic images by means of monochromatic partial images
FR678666A
(en )
1930-04-03
Device for high-frequency telephony by changing the frequency to the rhythm of the oscillations of speech
FR565689A
(en )
1924-02-02
Method for facilitating the discovery of deposits using periodic elastic waves
FR593464A
(en )
1925-08-24
Method and device for obtaining undiluted waves
FR566005A
(en )
1924-02-08
Method of receiving t waves. s. f. by combined oscillating circuits
FR629298A
(en )
1927-11-07
Process for the production of short electric waves
FR547012A
(en )
1922-11-29
Method and device for determining distances by reflected acoustic waves
FR556892A
(en )
1923-07-28
Method and apparatus for the continuous manufacture of acetone
FR676089A
(en )
1930-02-18
Method for the production of high quality hydrocarbons
FR525539A
(en )
1921-09-23
Process for obtaining alkylene cyanohydrin
FR800091A
(en )
1936-06-26
Method for producing reception by the ultra short wave beat method