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Fan Attachment for Dental Engines
Patent for a fan attachment for dental engines. Illustration included.
Date:
January 3, 1911
Creator:
Frisbie, Jonathan S.
System:
The Portal to Texas History
Sash Balance and Lock
Patent for a spring balance and lock for window sashes. Illustrations included.
Date:
April 18, 1911
Creator:
Huffman, Thadeus E.
System:
The Portal to Texas History