Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
Load children
B23
MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
Load children
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
Load children
B23K9/325
Devices for supplying or evacuating shielding gas
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B23K9/326
Purge gas rings, i.e. devices for supplying or evacuating shielding gas inside of hollow or tubular articles, e.g. pipes, vessels
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