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Hargo 300-Technology, Inc.
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Tyler, TX, US
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Patent Grant
Method of manufacturing austenitic stainless steel drill screws
Patent number
5,186,688
Issue date
Feb 16, 1993
Hargo 300-Technology, Inc.
Yasu Uejima
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...
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