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US Patent: 2,446,363
Combination positive clutch and torque responsive friction coupling
Patentee: Edwin W. Daum (exact or similar names) - Louisville, KY USPTO Classifications: 192/111.1, 192/48.5, 192/54.5, 192/56.61, 192/70.251, 279/80 Tool Categories: handheld power tools Assignees: James Clark Jr. Electric Co. - Louisville, KY Manufacturer: James Clark Jr. Electric Co. - Louisville, KY Witnesses: Unknown	Patent Dates: Applied: Mar. 23, 1945 Granted: Aug. 03, 1948 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Jas. Clark Jr. Electric Co.

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