1 result for “Owens-Corning Fiberglas”
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Patent · June 10, 1969 · page 2
Effect of cryolite on calcium silicate compositions (US Patent 3,449,141, 1969)
In the document: …panels, and fire walls gener 30 the prior art, for example the above identified patents. ally, construction material for ovens, dryers, etc. and Additions in excess of about 12% to 15% by weight of components therefor…