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发明名称	KELLNERRUFGERAET.
摘要
申请公布号	DE1833149(U)	申请公布日期	1961.06.15
申请号	DE196100B3943U	申请日期	1961.01.23
申请人	DR. GERHARD BECKER	发明人	DR. GERHARD BECKER
分类号		主分类号
代理机构		代理人
主权项
地址

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