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US Patent: 430,358
Screw Cutting Device
Patentees: Henry Westbrook (exact or similar names) - Woodstock, Oxford County, ON, Canada Robert Burns (exact or similar names) - Woodstock, Oxford County, ON, Canada USPTO Classifications: 408/147, 408/181 Tool Categories: metalworking tools : taps and dies metalworking tools : tap and die holders Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Nov. 11, 1889 Granted: Jun. 17, 1890 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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