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US Patent: 2,027,922
Method of making wrench sockets
Patentee:
Norris F. McNaught - Chicago, IL

USPTO Classifications:
72/325, 72/357, 76/114

Tool Categories:

Assignees:
Duro Metal Products Co. - Chicago, IL

Manufacturer:
Duro Metal Products Co. - Chicago, IL

Witnesses:
Unknown

Patent Dates:
Applied: May 29, 1935
Granted: Jan. 14, 1936

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Duro Metal Products Co.

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