CPC Subgroup
B21G 1/04 of needles specially adapted for use in machines or tools
Full Title
Making needles used for performing operations (forming heads on pin-like needles B21G3/12; making U-shaped hairpins B21G7/04) > of needles with eyes, e.g. sewing-needles, sewing-awls > of needles specially adapted for use in machines or tools