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US Patent: 909,341
Machine for Working Sheet Metal
Patentee: Isaac J. Shifley (exact or similar names) - Chicago, Cook County, IL USPTO Classifications: 72/181, 72/221 Tool Categories: metalworking machines : sheet metal : sheet metal flanging machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Jun. 24, 1907 Granted: Jan. 12, 1909 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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