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发明名称
ROOF PLATES PRODUCTION METHOD
摘要
申请公布号
PL154782(B1)
申请公布日期
1991.09.30
申请号
PL19880271940
申请日期
1988.04.18
申请人
发明人
分类号
C04B;C04B16/02;E04C2/16;E04D1/08;(IPC1-7):C04B16/02
主分类号
C04B
代理机构
代理人
主权项
地址
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