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US Patent: 1,300,042
Tool Holder
Patentee: Ludwig Swanson (exact or similar names) - Detroit, Wayne County, MI USPTO Classifications: 407/109, 407/112 Tool Categories: metalworking machines : drilling and boring : drilling and boring tool holders metalworking machines : metal lathes : lathe tool holders and tool posts Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Oct. 13, 1917 Granted: Apr. 08, 1919 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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