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发明名称
摘要
申请公布号
DE2446813(C3)
申请公布日期
1978.04.20
申请号
DE19742446813
申请日期
1974.10.01
申请人
PPG INDUSTRIES, INC., PITTSBURGH, PA. (V.ST.A.)
发明人
STEIGER, ROGER ARTHUR, CANAL FULTON;WILSON, WILLIAM LESLIE, BARBERTON
分类号
C01B31/34;(IPC1-7):C01B31/34
主分类号
C01B31/34
代理机构
代理人
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地址
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