U.S. federal trademark · Serial No. 72450875 · Reg. No. 0994669
SCIENTIFIC AND EDUCATIONAL LABORATORY SYSTEM FOR TEACHING OPTICS, ELECTROSTATICS, WAVE THEORY AND OTHER AREAS OF PHYSICS COMPRISING PHOTOMETERS AND PHOTOMETER PROBES, LIGHT SOURCES-NAMELY, INCANDESCENT LAMPS AND LASERS, ANGULAR TRANSLATORS, LINEAR TRANSLATORS, OPTICAL BENCH AND OPTICAL COMPONENTS-NAMELY, POLARIZERS, RETARDERS, LENSES, MIRRORS, SLITS, APERTURES, HOLOGRAMS, FILTERS, AND SCREENS, AND MOUNTS FOR SAID OPTICAL COMPONENTS AND RELATED APPARATUS
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