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US Patent: 4,194
Wood Auger
Apparatus for Boring Rocks or Earth
Patentees:
Thomas S. Speakman (exact or similar names) - Philadelphia, PA
Richard A. Stratton (exact or similar names) - Philadelphia, PA

USPTO Classifications:
175/202, 175/286, 56/164

Tool Categories:
stoneworking : stone boring and drilling machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Sep. 17, 1845

Patent Pictures:
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