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Nicholas A. Heil Jr.
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Tiffin, OH, US
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last 30 patents
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Patent Grant
Method and apparatus for producing fasteners having wrenching socke...
Patent number
4,805,437
Issue date
Feb 21, 1989
The National Machinery Company
Nicholas A. Heil
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...