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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2209/00
Details of machines or methods for cleaning hollow articles
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B08B2209/02
Details of apparatuses or methods for cleaning pipes or tubes
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B08B2209/027
for cleaning the internal surfaces
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B08B2209/032
by the mechanical action of a moving fluid
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