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US Patent: 254,286
Hollow auger
Patentee: Frederick S. Dellenbaugh (exact or similar names) - New York, NY USPTO Classifications: 408/204 Tool Categories: woodworking tools : hand drills : drill bits : hollow bits Assignees: None Manufacturer: Not known to have been produced Witnesses: John H. Renshawe Hamilton Hamilton	Patent Dates: Applied: Apr. 21, 1881 Granted: Feb. 28, 1882 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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