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经营范围
发明名称
POROUS HOLLOW SILICA-RICH FIBERS AND METHOD OF PRODUCING SAME
摘要
申请公布号
EP0186129(A3)
申请公布日期
1987.05.06
申请号
EP19850116189
申请日期
1985.12.18
申请人
PPG INDUSTRIES, INC.
发明人
BEAVER, RICHARD PAUL
分类号
C03C3/093;C03C3/118;C03C13/00;C03C25/68;(IPC1-7):C03C13/00;C03C25/06
主分类号
C03C3/093
代理机构
代理人
主权项
地址
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