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US Patent: 2,415,121
Drill grinder
Patentees: Christy Arthur Wiken (exact or similar names) - Milwaukee, WI Hugo V. Boehnke (exact or similar names) - Milwaukee, WI USPTO Classifications: 125/11.21, 451/226, 451/367, 451/375 Tool Categories: woodworking machines : machine and tool cutters : cutter grinding Assignees: Rockwell Mfg. Co. - Pittsburgh, PA Manufacturer: Rockwell Mfg. Co. - Pittsburgh, PA Witnesses: Unknown	Patent Dates: Applied: Mar. 10, 1943 Granted: Feb. 04, 1947 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Delta Specialty/Delta Mfg. Co./Delta-Rockwell/Rockwell Intl.

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