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发明名称
IMPROVEMENTS IN BUILDING BLOCKS
摘要
申请公布号
ZA7104225(B)
申请公布日期
1972.08.30
申请号
ZA19710004225
申请日期
1971.06.28
申请人
MC MURTRY L
发明人
MC MURTRY L
分类号
E04C
主分类号
E04C
代理机构
代理人
主权项
地址
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