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发明名称
Tonaufnahme- und Tonwiedergabeapparat.
摘要
申请公布号
CH205950(A)
申请公布日期
1939.07.15
申请号
CHD205950
申请日期
1937.12.09
申请人
TEFI-APPARATEBAU DR. DANIEL K.-G.
发明人
K.-G. TEFI-APPARATEBAU DR. DANIEL
分类号
主分类号
代理机构
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