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PIERRE LE GOAZIOU
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PIERRE LE GOAZIOU
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G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
G01S1/00—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith
G01S1/72—Beacons or beacon systems transmitting signals having a characteristic or characteristics capable of being detected by non-directional receivers and defining directions, positions, or position lines fixed relatively to the beacon transmitters; Receivers co-operating therewith using ultrasonic, sonic or infrasonic waves
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Radar, Positioning & Navigation
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Remote Sensing
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FR22504A1918-11-141918-11-14Appareils pour découvrir l'approche et repérer la direction d'une source sonore sous-marine ou aérienne
ExpiredFR22504E
(fr)
Perfectionnement aux procédés pour déterminer la direction d'un émetteur d'ondesélectro magnétiques ou d'un obstacle réfléchissant de telles ondes
Armature pour appareil électro-magnétique, spécialement pour appareil électro-acoustique, destiné par exemple à l'enregistrement ou à la reproduction de pistes sonores