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US Patent: 2,523,397
Change Speed Gearing for Lathe Headstocks
Patentees: Harold J. Siekmann (exact or similar names) - Cincinnati, OH George J. Kasselmann (exact or similar names) - Cincinnati, OH USPTO Classifications: 474/34, 74/333, 74/473.1 Tool Categories: industrial machines : industrial machine mechanisms : industrial machine gearing metalworking machines : metalworking machine mechanisms metalworking machines : metal lathes Assignees: R. K. Le Blond Machine Tool Co. - Cincinnati, OH Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Sep. 10, 1948 Granted: Sep. 26, 1950 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for R. K. Leblond Machine Tool Co.

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