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US Patent: 117,567
Improvement in boring-machines Pump auger
Patentee: William Penn Powers (exact or similar names) - North La Crosse, WI USPTO Classifications: 408/67 Tool Categories: metalworking machines : drilling and boring Assignees: None Manufacturer: Not known to have been produced Witnesses: Henry E. Getts John B. Richards	Patent Dates: Granted: Aug. 01, 1871 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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