PHOTOGRAPHIC EQUIPMENT-NAMELY, PHOTOGRAPHIC AND CINEMATOGRAPHIC CAMERAS AND PROJECTORS, ENLARGERS, AND EPISCOPES (I.E., ENLARGEER-PROJECTORS); ACCESSORIES FOR USE WITH THE FOREGOING-NAMELY, LENSES, OBJECTIVES, LIGHT POINTERS, FILM STRIP ATTACHMENTS, MICRO ATTACHMENTS FOR PROJECTING MICROSCOPE SLIDES, CASETTES, ENLARGER FRAMES, PHOTOGRAPHIC STORAGE AND CARRYING CASES, SLIDE HOLDERS, ROLL ADAPTERS, AND PROJECTION SCREENS AND WALLS; AND PARTS OF EACH OF THE FOREGOING