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Publication of CH224643ApublicationCriticalpatent/CH224643A/de
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
B23K9/00—Arc welding or cutting
B23K9/12—Automatic feeding or moving of electrodes or work for spot or seam welding or cutting
B23K9/121—Devices for the automatic supply of at least two electrodes one after the other
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Engineering & Computer Science
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Physics & Mathematics
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Plasma & Fusion
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Mechanical Engineering
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Resistance Welding
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CH224643D1939-12-291940-12-24Verfahren zur Herstellung von p,p'-Di-amino-phenyl-pyridyl-sulfon.
CH224643A
(de)