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Primary view of Well-Boring Drill.
Reed, Clarence Edward
August 14, 1917
Primary view of Roller Boring-Drill.
Reed, Clarence Edward
August 14, 1917
Primary view of Rotary Boring-Drill.
Hughes, Howard R.
August 28, 1917
Primary view of Attachment for Internal-Combustion Engines.
Potts, Hugh
August 14, 1917
Primary view of Attachment for Internal Combustion Engines.
Lynch, Floyd W.
August 16, 1917
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