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US Patent: 825,460
Grinding-wheel
Patentee:
Gilbert Hart - Detroit, MI

USPTO Classifications:
451/543

Tool Categories:
industrial tools : grinding wheels
metalworking machines : grinders : sharpening machines : grinding wheels

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Michael H. Dempsey
Thomas V. Dutton

Patent Dates:
Applied: Nov. 03, 1905
Granted: Jul. 10, 1906

Patent Pictures:
USPTO pdf tiff
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Description:
Improvements to patent 779,848.

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