2 results for “Owens-Illinois”
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Patent · July 30, 1968
Insulating riser sleeve composition (US Patent 3,394,913, 1968)
…1965. It was assigned to Johns Manville. The patent's description opens: This invention relates to improved riser sleeves for metal casting, and in particular to riser sleeves of improved compositions and the novel and advantageous…
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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…