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US Patent: 2,617,309
Variable-speed friction drive
Patentees: Kenneth H. Casson (exact or similar names) - Rockford, IL William G. Tyson (exact or similar names) - Rockford, IL USPTO Classifications: 476/48, 476/55, 476/9 Tool Categories: Assignees: Barnes Drill Co. - Rockford, IL Manufacturer: Barnes Drill Co. - Rockford, IL Witnesses: Unknown	Patent Dates: Applied: Apr. 18, 1951 Granted: Nov. 11, 1952 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin Vintage Machinery entry for Barnes Drill Co.

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