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公开(公告)号：US1951774A
公开(公告)日：1934-03-20
申请号：US38143529
申请日：1929-07-27
Applicant: STANDARD OIL DEV CO
Inventor： RUSSELL ROBERT P , HANKS WILLIAM V
CPC classification number: C01B3/384 , C01B3/48 , C01B2203/0233 , C01B2203/0283 , C01B2203/0415 , C01B2203/0475 , C01B2203/0811 , C01B2203/1052 , C01B2203/1241
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