Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B02
CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
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B02C
CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
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18/00
Disintegrating by knives or other cutting or tearing members which chop material into fragments
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B02C18/0007
specially adapted for disintegrating documents
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B02C2018/0023
Switching devices
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