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Priority to JP20363586UpriorityCriticalpatent/JPS63108000U/ja
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Procédé et dispositif pour la manoeuvre d'un mécanisme à mouvement alternatif rotatif pour l'enfoncement et l'enlèvement du sol de poteaux, tubes de forage et similaires
Dispositif de commande pour l'amenee et l'evacuation d'air comprime dans un moteur a piston de poussee, destine a l'entrainementd'une pompe a lubrifiant ou similaire