Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65H
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
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B65H20/20
by web-penetrating means, e.g. pins
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B65H20/22
to effect step-by-step advancement of web
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