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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B08B15/007
Fume suction nozzles arranged on a closed or semi-closed surface, e.g. on a circular, ring-shaped or rectangular surface adjacent the area where fumes are produced
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