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US Patent: 1,631,386
Metal Bending Machine
Patentees:
William Seymour - Chicago, Cook County, IL
James O. Groff - Chicago, Cook County, IL
Albert Schaaf - Chicago, Cook County, IL

USPTO Classifications:
192/129R, 72/323

Tool Categories:
metalworking machines : metal bending machines

Assignees:
Joseph T. Ryerson & Son - Chicago, Cook County, IL

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Apr. 02, 1925
Granted: Jun. 07, 1927

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Joseph T. Ryerson & Son

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