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• Decade: 1950s ×
• Written by: James L. Kempthorne ×
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1 result for “Owens-Corning Fiberglas”

1. Patent · April 18, 1950

   Hopper (US Patent 2,504,533, 1950)

   …filed January 9, 1947. The patent's description opens (from the scanned text): This invention relates to improvements in hopn Vvpers, such as are used in the Vspraying of fibrous materials onto surfaces for sound 'and…