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公开(公告)号：US3216073A
公开(公告)日：1965-11-09
申请号：US34744564
申请日：1964-02-26
Applicant: HARRISON EDWARD N
Inventor： HARRISON EDWARD N
IPC: B22C21/00
CPC classification number: B22C21/00
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公开(公告)号：US3216074A
公开(公告)日：1965-11-09
申请号：US34744664
申请日：1964-02-26
Applicant: HARRISON EDWARD N
Inventor： HARRISON EDWARD N
CPC classification number: B22C7/06 , B22C7/00 , B22C9/00 , Y10S425/033
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