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US Patent: 2,215,627
Machine tool drive
Patentee: John M. Walter (exact or similar names) - Cincinnati, OH USPTO Classifications: 475/135, 475/138, 475/290, 477/111, 477/15 Tool Categories: metalworking machines : milling machines Assignees: G. A. Gray Co. - Cincinnati, OH Manufacturer: G. A. Gray Co. - Cincinnati, OH Witnesses: Unknown	Patent Dates: Applied: Feb. 01, 1939 Granted: Sep. 24, 1940 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for G. A. Gray Co.
Description: "This invention relates to speed changing mechanisms and more particularly those of the planetary gear type..."

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