1 result for “Owens-Corning Fiberglas”
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Patent · October 31, 1972 · page 5
Method of and apparatus for sorting ores (US Patent 3,701,419, 1972)
In the document: …driver 24 actuates a the surface of table 16 forming a closely packed single respective valve 25 which opens to permit a flow of air layer of pieces and are discharged onto a slide plate 14…