2 results for “Owens-Corning Fiberglas”
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Patent · February 4, 1936
Acoustical Structure (US Patent 2,029,441, 1936)
…It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to an acoustical stmoture and particularly to one that is adapted for use in the absorption of sound…
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Patent · May 23, 1939
Perforated Membrane (US Patent 2,159,488, 1939)
…It was assigned to Johns Manville. The patent's description opens (from the scanned text): This invention relates to an acoustical structure comprising an air-impermeable member and a thick facing element defining an air-filled…