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发明名称
Kopftelephonbuegel
摘要
申请公布号
DE529113(C)
申请公布日期
1931.07.08
申请号
DE1926N026082D
申请日期
1926.07.08
申请人
NEUFELDT & KUHNKE G.M.B.H.
发明人
HERRMANNSEN CONRAD
分类号
H04R1/10
主分类号
H04R1/10
代理机构
代理人
主权项
地址
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