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公开(公告)号：US1915357A
公开(公告)日：1933-06-27
申请号：US44113030
申请日：1930-04-02
Applicant: VICTOR TALKING MACHINE CO
Inventor： BIRGER FERNBERG ERIC
CPC classification number: B29C33/305 , B29C43/36 , B29L2017/003 , Y10S425/81
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2.发明授权
公开(公告)号：US1938564A
公开(公告)日：1933-12-05
申请号：US44112930
申请日：1930-04-02
Applicant: VICTOR TALKING MACHINE CO
Inventor： BIRGER FERNBERG ERIC
IPC: B41F19/06
CPC classification number: B41F19/068 , B41P2219/20
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