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公开(公告)号：US2315403A
公开(公告)日：1943-03-30
申请号：US35811740
申请日：1940-09-24
Applicant: ALUMINUM CO OF AMERICA
Inventor： DILLON HAROLD H
CPC classification number: F16J1/16 , F02F3/0069 , F05C2201/021 , F05C2201/0448
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