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US Patent: 3,187,471
Belt grinding apparatus
Patentee: Gerald Den Herder (exact or similar names) - Tacoma, WA USPTO Classifications: 451/303, 451/311 Tool Categories: woodworking machines : sanding machines : belt sanders Assignees: Square Wheel Co. - Seattle, WA Manufacturer: Square Wheel Co. - Seattle, WA Witnesses: Unknown	Patent Dates: Applied: May 31, 1963 Granted: Jun. 08, 1965 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Square Wheel Co.
Description: See also patent 3,267,619.

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