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US Patent: 846,113
Manufacture of single-spiral augers
Patentee: Andrew Krieger (exact or similar names) - Columbus, OH USPTO Classifications: 72/376, 76/102 Tool Categories: tool making : making drills and augers Assignees: None Manufacturer: Not known to have been produced Witnesses: M. B. Schley A. L. Phelps	Patent Dates: Applied: Jan. 29, 1906 Granted: Mar. 05, 1907 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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