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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43/00
Use of control, checking, or safety devices, e.g. automatic devices comprising an element for sensing a variable
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B65H43/08
Photoelectric devices
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