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公开(公告)号：US3424229A
公开(公告)日：1969-01-28
申请号：US3424229D
申请日：1966-07-11
Applicant: DANSK IND SYNDIKAT
Inventor： GUNNERGAARD-POULSEN MARIUS
CPC classification number: B22C9/108 , E01C2201/02
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