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US Patent: 428,426
Machine for grinding twist or other drills
Patentees: Henry Jesse Bamford (exact or similar names) - London, England John Henry Storey (exact or similar names) - London, England USPTO Classifications: 451/160, 451/375 Tool Categories: metalworking machines : grinders : sharpening machines Assignees: None Manufacturer: Not known to have been produced Witnesses: Edward C. Hammond Robert Edward Phillips	Patent Dates: Applied: Jan. 07, 1889 Granted: May 20, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin

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