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US Patent: 21,641
Making Wood Screws
Improvement in Cutting Threads of Wood-Screws
Patentees:
Henry L. Kendall - Providence, RI
Homer P. Hunt - Providence, 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 pdf tiff
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