Manufacture of anhydrous silicates in pumiceous form,申请号US19380226550-传众专利搜索

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发明名称	Manufacture of anhydrous silicates in pumiceous form
摘要
申请公布号	US2243027(A)	申请公布日期	1941.05.20
申请号	US19380226550	申请日期	1938.08.24
申请人	PHILADELPHIA QUARTZ COMPANY	发明人	BAKER CHESTER L.
分类号	C01B33/32;C03C1/00;C04B38/02	主分类号	C01B33/32
代理机构		代理人
主权项
地址

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