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US Patent: 11,587
Tool for boring recesses for casters, &c.
Patentee:
Benjamin F. Graves - Boston, MA

USPTO Classifications:
408/224

Tool Categories:
metalworking machines : drilling and boring : drill bits
woodworking tools : hand drills : drill bits

Assignees:
William C. Knowlton - Boston, MA

Manufacturer:
Not known to have been produced

Witnesses:
Francis Gould
R. H. Eddy

Patent Dates:
Granted: Aug. 22, 1854

Patent Pictures:
USPTO pdf tiff
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Description:
City directories of the 1870s list our assignee, William C. Knowlton of Boston, as a "turner and bracket maker".

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