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US Patent: 51,980
Drill-head
Patentee:
William W. St. John (exact or similar names) - Syracuse, NY

USPTO Classifications:
175/395, 175/415, 175/418

Tool Categories:

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
S. H. Slosson
D. Bookstavn
Patent Dates:
Granted: Jan. 09, 1866

Patent Pictures:
USPTO (New site tip)
Google Patents
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