Improvement in Earth-Boring Apparatus.
Description:
Patent for improvement in well-boring machines in which it can be “rapidly bore through earth or rock holes of any desired size or depth, for the purpose of procuring water.” (P. 1, lines 9-12) Illustration is included.
Date:
November 21, 1876
Creator:
Yarborough, William H.
Item Type:
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Patent
Partner:
UNT Libraries Government Documents Department