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US Patent: 1,242,306
Tool Holder
Patentee: Paul Armstrong (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 407/89, 407/91 Tool Categories: metalworking machines : metal shapers : metal shaper tool holders metalworking machines : metal lathes : lathe tool holders and tool posts Assignees: Armstrong Brothers Tool Co. - Chicago, Cook County, IL Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Apr. 29, 1915 Granted: Oct. 09, 1917 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens "Vintage Machinery" entry for Armstrong Brothers Tool Co.

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