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经营范围
发明名称
A new or improved composition primarily intended for use as a building material
摘要
申请公布号
GB511481(A)
申请公布日期
1939.08.18
申请号
GB19390002396
申请日期
1939.01.24
申请人
ROY BUNDAY
发明人
分类号
C04B14/28
主分类号
C04B14/28
代理机构
代理人
主权项
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