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公开(公告)号：US2787504A
公开(公告)日：1957-04-02
申请号：US48034255
申请日：1955-01-07
Applicant: ALUMINUM CO OF AMERICA
Inventor： FRANK JARDINE , SMITH JAMES M
IPC: F02F3/02
CPC classification number: F02F3/02 , F02F2200/04 , F05C2201/021 , F05C2201/0448
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