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发明名称
Method of duplicating sound records
摘要
申请公布号
US2247991(A)
申请公布日期
1941.07.01
申请号
US19380214927
申请日期
1938.06.21
申请人
TEFI-APPARATEBAU DR. DANIEL K.-G.
发明人
DANIEL KARL
分类号
B29C59/04
主分类号
B29C59/04
代理机构
代理人
主权项
地址
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