[Ear plugs not for medical purposes; optical glasses; electric arc welding machines; electric welding apparatus, namely, welding torches; ozonators, namely, ozonisers; electrolytic cells, namely, electrolysers; egg candlers; cash registers; coin counting and sorting machines; electric sign boards for displaying target figures, current outputs or the like; photo copying machines; manually operated computing apparatus; time and date stamping machines; time recording devices, namely, time clocks...