Word: viscaloid
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...sales of the best substitute for glass, in eyeglasses, binoculars, cameras and magnifying glasses, developed since Venetians invented spectacles in the 13th Century. Roehm & Haas Co. makes Plexigum, Plexiglas, Acryloid and Acrysol in Philadelphia; Imperial Chemical Industries, Ltd. sells Diakon and Perspex from its Manhattan office; Du Pont Viscaloid Co. makes Pontalite (TIME, Sept. 21, Dec. 28) and Lucite at Kearny...
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