Apparatus for aerating water; Circular saws; Cleaning appliances utilizing steam; Dust exhausting installations for cleaning purposes; Electric hand-held drills; Electric sanders; Machine parts, namely, grindstones; Power-driven wrenches; Power-operated angle grinders; Screwdrivers, electric; Shears, electric; Spray guns for paint; Vacuum cleaners; Centering drilling bits being parts of machines; Pneumatic hand-held drills; Power saws