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US Patent: 2,381,572
Control mechanism for honing machines
Patentee: Harry J. Caldwell (exact or similar names) - Rockford, IL USPTO Classifications: 451/151 Tool Categories: metalworking machines : honing machines Assignees: Barnes Drill Co. - Rockford, IL Manufacturer: Barnes Drill Co. - Rockford, IL Witnesses: Unknown	Patent Dates: Applied: Apr. 15, 1943 Granted: Aug. 07, 1945 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Barnes Drill Co.

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