Resource Type
Counties
2 Matching Results
Results open in a new window/tab.
Results:
1 - 2 of
2
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
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