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Bucket Excavator.

Description: Patent for "new and useful Improvement in Bucket Excavators, of which the following is a specification. My invention relates to excavators of that kind in which a bucked is arranged to travel back and forth upon a runway which is lowered into the ground and which is adapted to determine the cross sectional outline of the ditch or excavation" (lines 5-13).
Date: November 30, 1915
Creator: Bettis, William I.
Partner: UNT Libraries Government Documents Department
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