photoelectric switches or sensors, fiber-optic photoelectric sensors, color recognition sensors, safety light curtain sensors; position sensors; speed sensors; distance sensors; image sensors; optical sensors; infrared sensors; proximity switches or sensors; sensor controls; displacement detectors; electric sensors; electro-optical sensors; optical micrometers; positioning detectors; image processing detectors; switches or sensors for detecting vibrations; lasers not for medical use; laser ma...

Compilation and analysis of data on audience reactions to television programs, and preparation of reports in connection therewith