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发明名称
Mikrotelephon mit abnehmbar angeordnetem trichterlosen Mundstueck
摘要
申请公布号
DE548909(C)
申请公布日期
1932.04.21
申请号
DED548909D
申请日期
1930.09.16
申请人
STANDARD ELEKTRIZITAETS-GESELLSCHAFT A.-G.
发明人
分类号
H04M1/03
主分类号
H04M1/03
代理机构
代理人
主权项
地址
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