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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
B21D17/00—Forming single grooves in sheet metal or tubular or hollow articles
B21D17/04—Forming single grooves in sheet metal or tubular or hollow articles by rolling
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FR629611D1926-05-111926-05-11
Manufacturing process for metal drums and cans, machine allowing the implementation, and new products obtained
ExpiredFR629611A
(en)