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公开(公告)号：US2241594A
公开(公告)日：1941-05-13
申请号：US30982639
申请日：1939-12-18
Applicant: STANDARD OIL CO
Inventor： WORTH GRAY , MACLAREN FREDERICK H
IPC: B22C3/00
CPC classification number: B22C3/00
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公开(公告)号：US2383543A
公开(公告)日：1945-08-28
申请号：US23562938
申请日：1938-10-18
Applicant: STANDARD OIL CO
Inventor： WORTH GRAY
IPC: C10L9/10
CPC classification number: C10L9/10
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