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US Patent: 2,812,621
Apparatus for automatically forming and finishing grooves in workpieces
Patentees: Charles Rex Barkley (exact or similar names) - New Lexington, OH William J. Blazek (exact or similar names) - New Lexington, OH Richard C. Evans (exact or similar names) - Lancaster, OH USPTO Classifications: 451/214, D15/124 Tool Categories: metalworking machines : grinders : sharpening machines Assignees: Lempco Products, Inc. - Bedford, OH Manufacturer: Lempco Products, Inc. - Bedford, OH Witnesses: Unknown	Patent Dates: Applied: Apr. 19, 1954 Granted: Nov. 12, 1957 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Lempco Products, Inc.

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