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公开(公告)号:CA302372A
公开(公告)日:1930-07-22
申请号:CA302372D
Applicant: STANDARD OIL DEV CO
Inventor: FISCHER HERBERT G M , GUSTAFSON CLIFFORD ERNEST
公开(公告)号:CA302372A
公开(公告)日:1930-07-22
申请号:CA302372D
Applicant: STANDARD OIL DEV CO
Inventor: FISCHER HERBERT G M , GUSTAFSON CLIFFORD ERNEST