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Publication of FR450599ApublicationCriticalpatent/FR450599A/fr
B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21D53/00—Making other particular articles
B21D53/38—Making other particular articles locksmith's goods, e.g. handles
B21D53/40—Making other particular articles locksmith's goods, e.g. handles hinges, e.g. door hinge plates
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Mechanical Engineering
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FR450599D1911-11-151912-11-14Perfectionnements aux charnières des couvercles de boites en feuille de métal, et machine à les exécuter
ExpiredFR450599A
(fr)
Perfectionnements aux machines à faire les ourlets sur les bords des feuilles de métal, dans la fabrication des boites métalliques et articles similaires