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US Patent: 2,844,957
Motorized hardness tester
Patentee: Louis Small (exact or similar names) - Detroit, MI USPTO Classifications: 73/83 Tool Categories: metalworking tools : machinist tools : measuring tools : metal hardness testers Assignees: Service Diamond Tool - Ferndale, MI Manufacturer: Service Diamond Tool Co. - Ferndale, MI Witnesses: Unknown	Patent Dates: Applied: Feb. 14, 1955 Granted: Jul. 29, 1958 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Service Diamond Tool Co.

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