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US Patent: 21,641
Making Wood Screws Improvement in Cutting Threads of Wood-Screws
Patentees: Henry L. Kendall (exact or similar names) - Providence, Providence County, RI Homer P. Hunt (exact or similar names) - Providence, Providence County, RI USPTO Classifications: 408/1R, 470/59 Tool Categories: metalworking machines : screw machines Assignees: New England Screw Co. - Boston, Suffolk County, MA Manufacturer: Not known to have been produced Witnesses: Unknown	Patent Dates: Granted: Sep. 28, 1858 Patent Pictures: USPTO (New site tip) Google Patents Report data errors or omissions to steward Joel Havens

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