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Kai Ravnborg
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Herculaneum, MO, US
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last 30 patents
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Patent Grant
Method of alloying aluminum and calcium into lead
Patent number
4,808,376
Issue date
Feb 28, 1989
The Doe Run Company
Anthony W. Worcester
C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...