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公开(公告)号:US1686491A
公开(公告)日:1928-10-02
申请号:US16202127
申请日:1927-01-19
Applicant: STANDARD OIL DEV CO
Inventor: HUGHES WAYNE S , JAMES HARROP
公开(公告)号:US1686491A
公开(公告)日:1928-10-02
申请号:US16202127
申请日:1927-01-19
Applicant: STANDARD OIL DEV CO
Inventor: HUGHES WAYNE S , JAMES HARROP