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US Patent: 825,460
Grinding-wheel
Patentee: Gilbert Hart (exact or similar names) - 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: Thomas V. Dutton Michael H. Dempsey	Patent Dates: Applied: Nov. 03, 1905 Granted: Jul. 10, 1906 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin
Description: Improvements to patent 779,848.

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