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Automatic-control system for the angular speed of a synchronous motor
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System for the transmission of a radio-frequency signal with separation into individually transmittable subbands
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Zinc-plating bath for bright or glossy coating
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Technique and device for improving the combustion as well as the performance of spark-ignition engines operating at altitude
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Speed regulation of asynchronous three-phase motors
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Single phase motor including a cage with specially profiled parts
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Method and stereoscopic optical apparatus for determining the roughness of the surfaces of machined parts
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Rotary volumetric mechanism
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Alternating current are welding installation comprising several stations.
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Installation for heating metal parts
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Process for obtaining relief ceramic products
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