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US Patent: 456,258
Drill for Drilling Square Holes
Patentees: David Brown Hutton (exact or similar names) - Essex, Essex County, England Archibald Frederick George Daniels (exact or similar names) - Essex, Essex County, England USPTO Classifications: 407/54, 408/227, 82/1.3 Tool Categories: metalworking machines : drilling and boring : drill bits Assignees: None Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Applied: Feb. 03, 1891 Granted: Jul. 21, 1891 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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