Stock material or miscellaneous articles – Three dimension imitation or 'treated' natural product
Patent
1989-09-05
1991-11-05
Epstein, Henry F.
Stock material or miscellaneous articles
Three dimension imitation or 'treated' natural product
156 61, 264245, 428141, B44E 904
Patent
active
050630938
ABSTRACT:
A shaped article of solid ceramic-like material having indentations or fissures of irregular shape and depth, the indentations produced by chemical reaction; and process of manufacture.
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Armstrong World Industries Inc.
Epstein Henry F.
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