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US Patent: 2,415,121
Drill grinder
Patentees:
Hugo V. Boehnke - Milwaukee, WI
Christy A. Wiken - 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 Manufacturing Co. - Pittsburgh, PA

Manufacturer:
Rockwell Manufacturing Co. - Pittsburgh, PA

Witnesses:
Unknown

Patent Dates:
Applied: Mar. 10, 1943
Granted: Feb. 04, 1947

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Rockwell Manufacturing Co.

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