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• Decade: 1930s ×
• Organization: US Patent Office ×
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1 result for “Reaction Department”

1. Patent · February 6, 1934

   Method of Producing Reactions with Silica and Products Thereof (US Patent 1,945,534, 1934)

   Where it was listed Asbestos, May 1934, in its patents department (the year's issues)