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Apparatus for Treating Granular Materials
Patent for an apparatus for treating granular materials. Illustrations included.
Date:
October 29, 1912
Creator:
Lanaux, Alfred A.
System:
The Portal to Texas History
Air-Craft Propeller
Patent for an air craft propeller that reduces air resistance.
Date:
October 8, 1912
Creator:
Koiw, Julius
System:
The Portal to Texas History