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US Patent: 181,386
Rock Drilling Machine
Patentee:
Edward S. Winchester (exact or similar names) - Boston, Suffolk County, MA

USPTO Classifications:
91/224, 91/225

Tool Categories:
stoneworking : stone boring and drilling machines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Applied: Jun. 20, 1876
Granted: Aug. 22, 1876

Patent Pictures:
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