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Publication of FR871928ApublicationCriticalpatent/FR871928A/fr
G06G1/14—Hand manipulated computing devices in which a straight or curved line has to be drawn from given points on one or more input scales to one or more points on a result scale
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FR871928D1941-01-021941-01-02Appareil pour contrôler la consommation du gaz, de l'électricité, ou d'autres dépenses
ExpiredFR871928A
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