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Drill-Bit
Patent for Drill-Bit that is especially designed for purpose of drilling through rock, or other hard formations and is also adapted for use in drilling through softer formation, such as shell.
Date:
June 10, 1919
Creator:
Culmore, March J. A.
System:
The Portal to Texas History
Paper Clip
Patent for a paper clip. Illustration included.
Date:
May 10, 1910
Creator:
Galbraith, David G. & Galbraith, Nannie L.
System:
The Portal to Texas History