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Primary view of Well-Drilling Device.
Smith, Primus W. & Bookhout, John J.
March 1, 1921
Primary view of Well-Drilling Bit.
Smith, Primus W.
unknown creation date
Primary view of Drill-Bit
Smith, Primus W.; Bookhout, John J. & Monce, Edwin W.
January 11, 1921
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