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US Patent: 3,690,568
Wood grinding
Patentee: Donald K. Alexander (exact or similar names) - Thunder Bay, ON Canada USPTO Classifications: 241/15, 241/28, 241/282, 241/34 Tool Categories: specialty machines : paper making machines woodworking machines : specialty woodworking machines : wood grinding machines Assignees: Koehring-Waterous Ltd. - Brantford, ON Canada Norton Co. of Canada - Hamilton, ON Canada Great Lakes Paper Co., Ltd. - Thunder Bay, ON Canada Montague Machine Co. - Turners Falls, MA Norton Co. - Worcester, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 17, 1970 Granted: Sep. 12, 1972 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Norton Co.

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