Regeneration of contact material,申请号US19390309448-传众专利搜索

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发明名称	Regeneration of contact material
摘要
申请公布号	US2303717(A)	申请公布日期	1942.12.01
申请号	US19390309448	申请日期	1939.12.15
申请人	STANDARD OIL COMPANY	发明人	ARVESON MAURICE H.
分类号	B01J8/12	主分类号	B01J8/12
代理机构		代理人
主权项
地址

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