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发明名称
PIEZOELEKTRISCHER SCHALLKOPF HOHER LEISTUNGSDICHTE.
摘要
申请公布号
DE1764853(U)
申请公布日期
1958.04.10
申请号
DE195700S4458U
申请日期
1957.08.06
申请人
SIEMENS-SCHUCKERTWERKE AKTIENGESELLSCHAFT
发明人
分类号
主分类号
代理机构
代理人
主权项
地址
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