dust masks incorporating air purification; dust protection goggles; frames for spectacles and pince-nez; electric battery chargers; electric door bells; electric linear actuators; electrical switchgears; electronic collars to train animals; flowmeters; eyewear; contact lens cases incorporating ultrasonic cleaning functions; anti-glare glasses; plotters; precision measuring apparatus; frames for pince-nez; pince-nez; spectacles; retorts; sunglasses; signal lanterns