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US Patent: 139,149
Improvement in Saw Filing Machines
Patentee:
Charles F. Henis - Baltimore, MD

USPTO Classifications:
76/31, 76/78.1

Tool Categories:
woodworking tools : handsaws : saw sharpening tools

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Melville Church
N. K. Ellsworth

Patent Dates:
Applied: Oct. 21, 1872
Granted: May 20, 1873

Patent Pictures:
USPTO pdf tiff
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Description:
Combination file holder and clamping apparatus.

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