by methods involving the use of tools, e.g. brushes, scrapers

Full Title

Cleaning hollow articles by methods or apparatus specially adapted thereto > Cleaning of containers, e.g. tanks > by methods involving the use of tools, e.g. brushes, scrapers

Classification Context

Section:

PERFORMING OPERATIONS; TRANSPORTING

Class:

CLEANING

Subclass:

CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL