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US Patent: 297,171
Ratchet Drill
Patentee:
Caspar Schumacher (exact or similar names) - Kalk, Stadtbezirk of Cologne, Germany

USPTO Classifications:
408/121, 408/137

Tool Categories:
metalworking tools : ratchet drills

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Dec. 21, 1882
Granted: Apr. 22, 1884

Patent Pictures:
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Description:
Patented in Germany, 21 Jul., 1881, #17,477.

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