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Robert H. Henke
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Pittsburgh, PA, US
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last 30 patents
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Patent Grant
Methods of producing silicon steel strip
Patent number
4,231,818
Issue date
Nov 4, 1980
Allegheny Ludlum Industries, Inc.
Robert H. Henke
C21 - METALLURGY OF IRON
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Patent Grant
Method of producing silicon steel strip
Patent number
3,969,162
Issue date
Jul 13, 1976
Robert H. Henke
B21 - MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL PUNCHING...