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公开(公告)号：US2339972A
公开(公告)日：1944-01-25
申请号：US43904042
申请日：1942-04-15
Applicant: ALUMINUM CO OF AMERICA
Inventor： ANDERSON RUSSELL G , POLLACK JOSEPH S
IPC: F02F1/36
CPC classification number: F02F1/365
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