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CA Patent: CA-493,340
Variable speed pulley
Patentee: Charles McLear (exact or similar names) - Des Plaines, IL USPTO Classifications: Tool Categories: metalworking machines : metalworking machine mechanisms : metalworking variable speed mechanisms Assignees: DoALL Co., Inc. - Des Plaines, IL Manufacturer: DoALL Co., Inc. - Des Plaines, IL Witnesses: Unknown	Patent Dates: Granted: Jun. 02, 1953 Patent Pictures: CIPO Data Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for DoALL Co., Inc.
Description: Improvements to patent 2,151,189.

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