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US Patent: 175,169
Pile-Drivers
Patentees:
Henry F. Roehrs (exact or similar names) - Cincinnati, OH
Joseph Kohler (exact or similar names) - Cincinnati, OH

USPTO Classifications:
173/84

Tool Categories:
construction machines : pile drivers

Assignees:
Henry F. Roehrs - Cincinnati, OH
Joseph Kohler - Cincinnati, OH
F. W. Alms - Cincinnati, OH

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Feb. 02, 1876
Granted: Mar. 21, 1876

Patent Pictures:
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