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US Patent: 2,400,826
Universal Grinder Head
Patentee: Harry S. Jakobsen (exact or similar names) - Harrison, Hudson County, NJ USPTO Classifications: 451/239, 451/396 Tool Categories: metalworking machines : grinding machines Assignees: J & S Tool Co. - East Orange, Essex County, NJ Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 27, 1944 Granted: May 21, 1946 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for J & S Tool Co.

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