Electronic testing apparatuses for liquid crystal panels; electronic testing apparatuses for semiconductor devices; electronic testing apparatuses for semiconductor integrated circuit devices; electronic testing sockets for semiconductor devices; electronic testing apparatuses for liquid crystal display devices; electronic testing probes for liquid crystal display devices; electronic testing probes for semiconductor integrated circuit chips; electronic testing probes for film circuit boards; electronic testing probes for printed circuit boards; electronic testing probes for semiconductor devices; ozonizers; electrolyzers; egg-candlers; cash registers; coin-counting or coin-sorting machines; electric sign boards for displaying target figures, current outputs, or the like; photocopying machines; time- and date-stamping machines; time clocks; voting machines; fire extinguishers; fire-hose nozzles; sprinkler systems for fire protection; fire alarms; protective helmets; vehicle-breakdown warning triangles; luminous or mechanical road signs; simulators for the steering and control of vehicles; rotary converters; electric wires and cables; electric buzzers; magnetic cores; resistance wires; electrodes; fire boats; fire engines; gloves for protection against accidents; dust masks; gas masks; welding masks; fireproof garments; spectacles; electronic circuits and CD-ROMs recorded with programs for hand-held games with liquid crystal displays; protective helmets for sports; air tanks; metronomes; electronic circuits and CD-ROMs recorded with automatic performance programs for electronic musical instruments; slide-rules; exposed cinematographic films; exposed slide films; slide-film mounts; weight belts for divers