Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
Load children
B21
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
Load children
B21D
WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
Load children
53/00
Making other particular articles
Load children Filter patents View analytics View as hierarchy
B21D53/16
rings, e.g. barrel hoops
Load children Filter patents View analytics View as hierarchy
B21D53/18
of hollow or C-shaped cross-section, e.g. for curtains, for eyelets
Filter patents View analytics View as hierarchy