Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
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B08
CLEANING
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B08B
CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
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15/00
Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
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B08B15/002
using a central suction system, e.g. for collecting exhaust gases in workshops
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