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PCE
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CPC Subgroup
B28B 21/86

Cores (in general B28B7/00)

Full Title

Methods or machines specially adapted for the production of tubular articles > Cores (in general B28B7/00)

1 direct subcode

Child Classifications

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  • B28B 21/88 adjustable, collapsible or expansible (using inflatable cores B28B21/20 )