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公开(公告)号:US2133735A
公开(公告)日:1938-10-18
申请号:US7133836
申请日:1936-03-27
Applicant: SHELL DEV
Inventor: ISRAEL WATERMAN HEIN , JAN LEENDERTSE JACOB , DE KOK WILLEM J C
公开(公告)号:US2133735A
公开(公告)日:1938-10-18
申请号:US7133836
申请日:1936-03-27
Applicant: SHELL DEV
Inventor: ISRAEL WATERMAN HEIN , JAN LEENDERTSE JACOB , DE KOK WILLEM J C