Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B65
CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
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B65B
MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
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57/00
Automatic control, checking, warning, or safety devices
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B65B57/10
responsive to absence, presence, abnormal feed, or misplacement of articles or materials to be packaged
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