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MATHELOT ET GENTILHOMME SOC
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MATHELOT ET GENTILHOMME SOC
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Application grantedgrantedCritical
Publication of FR334149ApublicationCriticalpatent/FR334149A/fr
G04F1/00—Apparatus which can be set and started to measure-off predetermined or adjustably-fixed time intervals without driving mechanisms, e.g. egg timers
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Physics & Mathematics
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General Physics & Mathematics
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FR334149D1903-07-271903-07-27Allumeur extincteur pour éclairage électrique
ExpiredFR334149A
(fr)