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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9/00
Cleaning hollow articles by methods or apparatus specially adapted thereto
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B08B9/02
Cleaning pipes or tubes or systems of pipes or tubes
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B08B9/027
Cleaning the internal surfaces; Removal of blockages
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B08B9/04
using cleaning devices introduced into and moved along the pipes
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B08B9/049
having self-contained propelling means for moving the cleaning devices along the pipes; , i.e. self-propelled
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B08B9/051
the cleaning devices having; internal; motors; , e.g. turbines; for powering cleaning tools
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