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经营范围
发明名称
Improvements in hollow building units or blocks
摘要
申请公布号
GB522311(A)
申请公布日期
1940.06.14
申请号
GB19380035186
申请日期
1938.12.02
申请人
CORNING GLASS WORKS
发明人
分类号
E04C1/42
主分类号
E04C1/42
代理机构
代理人
主权项
地址
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