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B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
B23K5/00—Gas flame welding
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FR779461D1934-09-171934-09-17Soudure autogène au chalumeau butane-oxygène
ExpiredFR779461A
(fr)