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US Patent: 168,439
Steam-Hammers
Patentee: Stephen D. Wilson (exact or similar names) - Des Moines, Polk County, IA USPTO Classifications: 147/1, 173/100, 91/279 Tool Categories: metalworking machines : forging machines : power hammers Assignees: Stephen D. Wilson - Des Moines, Polk County, IA William Stein - Des Moines, Polk County, IA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Mar. 06, 1875 Granted: Oct. 05, 1875 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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