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发明名称
Einrichtung an einem Tellurium
摘要
申请公布号
DE562235(C)
申请公布日期
1932.10.22
申请号
DE1929J040138D
申请日期
1929.12.17
申请人
FREDERICH GEORGE JONES
发明人
分类号
G09B27/02
主分类号
G09B27/02
代理机构
代理人
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