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Optische Anstalt CP Goerz AG
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Optische Anstalt CP Goerz AG
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Application grantedgrantedCritical
Publication of FR596390ApublicationCriticalpatent/FR596390A/fr
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
G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
G01S5/18—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using ultrasonic, sonic or infrasonic waves
G01S5/22—Position of source determined by co-ordinating a plurality of position lines defined by path-difference measurements
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Physics & Mathematics
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Engineering & Computer Science
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General Physics & Mathematics
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Radar, Positioning & Navigation
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Remote Sensing
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FR596390D1925-03-241925-03-24Procédé et dispositif pour le repérage sur le terrain de sources de sons cachées
ExpiredFR596390A
(fr)
Vorrichtung zum Aufnehmen und Wiedergeben längerer Tonstücke, insbesondere in Verbindung mit einem Apparat zum Aufnehmen und Wiedergeben von Bildfilmen.