B21K 3/04
Making engine or like machine parts not covered by sub-groups of [CPC: B21K1/00]; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots
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Edits on 9 Mar, 2022
Golden AI
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B21K 3/04
Making engine or like machine parts not covered by sub-groups of [CPC: B21K1/00]; Making propellers or the like blades, e.g. for turbines; Upsetting of blade roots
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