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US Patent: 1,379,995
Method of Making Drills or the Like
Patentee:
John J. Kunzer - Chicago, Cook County, IL

USPTO Classifications:
76/108.1

Tool Categories:
tool making : making drills and augers

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

Manufacturer:
Not known to have been produced

Witnesses:
Unknown

Patent Dates:
Applied: Aug. 07, 1918
Granted: May 31, 1921

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

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