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ABEL-LOUIS DOIGNON
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ABEL-LOUIS DOIGNON
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Application filed by ABEL-LOUIS DOIGNONfiledCriticalABEL-LOUIS DOIGNON
Application grantedgrantedCritical
Publication of FR334694ApublicationCriticalpatent/FR334694A/fr
G04F7/00—Apparatus for measuring unknown time intervals by non-electric means
G04F7/02—Apparatus for measuring unknown time intervals by non-electric means by measuring the distance of fall or the final velocity of a falling body
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Physics & Mathematics
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General Physics & Mathematics
(AREA)
FR334694D1903-08-181903-08-18Perfectionnements apportés au chronographe "le boulengé-bréger"
ExpiredFR334694A
(fr)