B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
D—TEXTILES; PAPER
D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
D01G—PRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
D01G99/00—Subject matter not provided for in other groups of this subclass
Landscapes
Engineering & Computer Science
(AREA)
Mechanical Engineering
(AREA)
Textile Engineering
(AREA)
Filamentary Materials, Packages, And Safety Devices Therefor
(AREA)