Low density silica gel,申请号US19530365255-传众专利搜索

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发明名称	Low density silica gel
摘要
申请公布号	US2759798(A)	申请公布日期	1956.08.21
申请号	US19530365255	申请日期	1953.06.30
申请人	W. R. GRACE & CO.	发明人	WARING CHARLES E.;SHIPLEY DOROTHY K.
分类号	C01B33/16	主分类号	C01B33/16
代理机构		代理人
主权项
地址

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