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US Patent: 492,118
Drilling machine (for mining coal, but brace configuration)
Patentee:
John T. Snyder (exact or similar names) - Luzerne, PA

USPTO Classifications:
173/145, 175/121, 175/383, 175/388

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Unknown
Patent Dates:
Granted: Feb. 21, 1893

Patent Pictures:
USPTO (New site tip)
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