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PCE
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CPC Subgroup
B21G 1/12

Securing, cleaning-off burrs, reconditioning polishing, grinding (takes precedence over B21G1/02 - B21G1/10)

Full Title

Making needles used for performing operations (forming heads on pin-like needles B21G3/12; making U-shaped hairpins B21G7/04) > Securing, cleaning-off burrs, reconditioning polishing, grinding (takes precedence over B21G1/02 - B21G1/10)