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US Patent: 438,605
Nut Tapping Machine
Patentee:
Frank S. Cook - Springfield, Clark County, OH

USPTO Classifications:
408/65, 408/67, 470/1

Tool Categories:
specialty machines : nut making machines
metalworking machines : pipe threading machines

Assignees:
Wells W. Leggett - Detroit, MI
Thomas H. Simpson - Detroit, MI

Manufacturer:
Unknown

Witnesses:
Unknown

Patent Dates:
Applied: Oct. 28, 1886
Granted: Oct. 21, 1890

Patent Pictures: [ 1 | 2 ]
USPTO pdf tiff
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