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公开(公告)号：US1775839A
公开(公告)日：1930-09-16
申请号：US16818127
申请日：1927-02-14
Applicant: ERNST GIDEON BEK
Inventor： JONATHAN WENZ , GEORG BRUNHUBNER , JOSEF ALVERA
IPC: B23K1/00
CPC classification number: B23K1/00 , B23K2201/30
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