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US Patent: 2,531,921
Surface finishing fixture
Patentee: Russel A. Schultz (exact or similar names) - Detroit, MI USPTO Classifications: 451/239, 451/303, 451/306 Tool Categories: metalworking machines : grinders Assignees: Robbins Engineering Co. - Detroit, MI Manufacturer: Robbins Engineering Co. - Detroit, MI Witnesses: Unknown	Patent Dates: Applied: Dec. 26, 1947 Granted: Nov. 28, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Robbins Engineering Co.
Description: The invention is a fixture for grinding thin-edged parts such as jet turbine blades.

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