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发明名称
HOER- UND SPRECHGERAET.
摘要
申请公布号
DE1943449(U)
申请公布日期
1966.08.04
申请号
DE196600Z0519U
申请日期
1966.03.22
申请人
ALOIS ZETTLER ELEKTROTECHNISCHE FABRIK G.M.B.H.
发明人
分类号
主分类号
代理机构
代理人
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