by using masks

Full Title

Working by laser beam, e.g. welding, cutting or boring > Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam > Shaping the laser beam, e.g. by masks or multi-focusing > by means of optical elements, e.g. lenses, mirrors or prisms > by using masks

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR

Subclass:

SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM