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US Patent: 403,175
Gage for Grinding Twist or Flat Drills
Patentee: Adolph F. Brewer (exact or similar names) - San Francisco, CA USPTO Classifications: 33/201 Tool Categories: woodworking tools : hand drills : drill accessories layout tools : measurement gauges Assignees: None Manufacturer: Not known to have been produced Witnesses: Eugene H. Thorp Orville C. Baldwin	Patent Dates: Applied: Aug. 15, 1888 Granted: May 14, 1889 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Jeff Joslin (dm)

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