FR852329A - Dispositif chronométrique, en particulier pour altimètres d'aéronefs appliquant la méthode de sondage par l'écho au moyen d'ondes sonores
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Dispositif chronométrique, en particulier pour altimètres d'aéronefs appliquant la méthode de sondage par l'écho au moyen d'ondes sonores
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Atlas Werke AG
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Atlas Werke AG
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G04F13/00—Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00
G04F13/02—Apparatus for measuring unknown time intervals by means not provided for in groups G04F5/00 - G04F10/00 using optical means
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FR852329D1938-03-291939-03-29Dispositif chronométrique, en particulier pour altimètres d'aéronefs appliquant la méthode de sondage par l'écho au moyen d'ondes sonores
ExpiredFR852329A
(fr)