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US Patent: 1,947,862
Special High Speed Drive for the Spindle of Boring Machine and Other Machine Tools
Patentees: Henry M. Lucas (exact or similar names) - Cleveland Heights, Cuyahoga County, OH Hallis N. Stephan (exact or similar names) - Cleveland, Cuyahoga County, OH USPTO Classifications: 29/26R, 408/128, 408/133, 74/333, 74/343, 82/143 Tool Categories: metalworking machines : drilling and boring : horizontal boring mills Assignees: Lucas Machine Tool Co. - Cleveland, Cuyahoga County, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jan. 09, 1932 Granted: Feb. 20, 1934 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Lucas Machine Tool Co.

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