73438285
Aug 8, 1983
May 14, 1985
Optical Glass and Optical Glass Blanks, Phosphate and Silicate Laser Glasses, Cerenkov Counters; Fiber Optical Rods; Optical and Ophthalmic Glass-Namely, Ophthalmic Raw Glass and Ophthalmic Glass Blanks, Photochromic Glass Lens Blanks for Eyeglasses and for Sunglasses, Industrial Safety Glass, Clear and Tinted Crown Glass and Lightweight Clear Crown Glass, Ultraviolet Filtering Crown Glass, Specialty Glass; Photofilters, Cathode-Ray Tube Face Plates and Contrast Enhancement Filters, Scientific Filter Glass, Interference Filters, X-Ray Lead Glass, Radiation Shielding Glass and Windows
Electrical and Scientific ApparatusTransparent Glass Ceramic Materials for Manufacturing Use in the Industrial Arts
Housewares and Glass