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发明名称	ELECTRETS AND METHOD OF MAKING SAME
摘要
申请公布号	CA882386(A)	申请公布日期	1971.09.28
申请号	CAD882386	申请日期
申请人	THERMO ELECTRON CORPORATION	发明人	PRESTON V. MURPHY
分类号		主分类号
代理机构		代理人
主权项
地址

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