Roy Hetherington Jr.

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West Chester, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Process for making resulfurized machinable steel
- Patent number 4,373,967
- Issue date Feb 15, 1983
- Lukens, Inc.
- Charles R. Roper
- C21 - METALLURGY OF IRON
Information Patent Grant
Steel substrate for glassing
- Patent number 4,198,249
- Issue date Apr 15, 1980
- Lukens Steel Company
- Charles R. Roper
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...