mixing machines; dust collecting machines; dust removing installations for cleaning purposes; dust exhausting installations for cleaning purposes; industrial machinery for dust collection; industrial machinery for collection of dust; industrial dust separators; dust separators; dust filters for vacuum cleaners; dust filters being parts of machines or engines; dust cyclone filters being parts of machines or engines

dust cyclone filters for air filtering installations; dust filters for air filtering installations; industrial scrubbers for removing dust particulates from air during industrial processing; apparatus and instruments for ventilating purposes