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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B65H20/36
having means to optionally advance the web either in one longitudinal direction or in the opposite longitudinal direction
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B65H20/40
by changing the direction of mechanism driving the pinch roller
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