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发明名称
A new and improved tile
摘要
申请公布号
GB439993(A)
申请公布日期
1935.12.18
申请号
GB19340024140
申请日期
1935.06.26
申请人
MAURICE LEVY
发明人
分类号
C04B41/52;C04B41/70
主分类号
C04B41/52
代理机构
代理人
主权项
地址
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