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US Patent: 309,374
Pipe cutting and threading machine
Patentees:
Moses C. Bignall - St. Louis, MO
George W. Whitman - St. Louis, MO

USPTO Classifications:
408/176, 470/75

Tool Categories:
metalworking machines : pipe cutting machines
metalworking machines : pipe threading machines

Assignees:
George W. Whitman - St. Louis, MO

Manufacturer:
Whitman Agricultural Co. - St. Louis, MO

Witnesses:
Paul Bakewell
W. H. Scudder, Jr.

Patent Dates:
Applied: Dec. 01, 1883
Granted: Dec. 16, 1884

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Whitman Agricultural Co.

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