Resource Type
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Plow.
Patent for a plow that has a new design for a "subsoil and harrow attachment to the ordinary break-plow" (lines 9-10).
Date:
May 19, 1896
Creator:
Bowers, Thomas M.
System:
The Portal to Texas History
Rotary Boring Drill
Patent for a rotary boring drill that shears off material in a circular manner while drilling holes.
Date:
December 19, 1916
Creator:
Hughes, Howard R.
System:
The Portal to Texas History