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G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
G06G7/18—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals
G06G7/188—Arrangements for performing computing operations, e.g. operational amplifiers for integration or differentiation; for forming integrals using electromechanical elements
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FR967001D1948-05-251948-05-25Procédé et moyens pour l'intégration et la différentiation relatives de deux variables quelconques
ExpiredFR967001A
(fr)