US1011055A
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Process of forming drill-shanks and similar implements.
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US945735A
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Bit-chuck and bit.
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US968472A
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Drill and drill-shank.
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US968471A
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Earth-auger.
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US980776A
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Drill-coupling.
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US923514A
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Drill.
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US923513A
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Drill.
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US899729A
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Pneumatic drill.
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US880881A
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Pneumatic and other drill.
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US888164A
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Pneumatic drill.
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US890978A
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Pneumatic drill.
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US983363A
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Pneumatic mining-machine.
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US942066A
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Feed for pneumatic tools.
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US884152A
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Pneumatic hammer.
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US884151A
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Pneumatic hammer.
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US873938A
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Pneumatic hammer.
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US884150A
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Drill-head and bit or cutter.
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US884331A
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Pneumatic and other drills.
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US880880A
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Pneumatic and other drill.
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US868661A
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Pneumatic and other drill.
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