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
B21D51/02
characterised by the structure of the objects
Load children Filter patents View analytics View as hierarchy
B21D51/04
built-up objects, e.g. objects with rigidly-attached bottom or cover
Filter patents View analytics View as hierarchy