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US Patent: 326,342
Adjustable Concentric Channeler
Patentee:
James C. Smith (exact or similar names) - Boston, MA

USPTO Classifications:
408/147, 408/190, 408/192, 408/202

Tool Categories:
woodworking tools : hand drills : drill bits : adjustable drill bits

Assignees:
James C. Smith - Boston, MA
Thomas G. Newgent - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
T. W. Porter
Eugene Humphrey

Patent Dates:
Applied: May 24, 1885
Granted: Sep. 15, 1885

Patent Pictures:
USPTO (New site tip)
Google Patents
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