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US Patent: 231,361
Ratchet Drill
Patentee:
William H. Richards (exact or similar names) - Pittsburgh, Allegheny County, PA

USPTO Classifications:
408/120, 408/122.5, 408/124, 74/134

Tool Categories:
metalworking tools : ratchet drills
metalworking machines : drilling and boring : drill presses

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
David L. Smith
D. S. McKnight
J. H. Geyser
C. W. Simon

Patent Dates:
Applied: Nov. 25, 1879
Granted: Aug. 17, 1880

Patent Pictures:
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Description:
This patent is an improvement on patent #197,896.

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