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经营范围
发明名称
Improvements in building blocks and wall contructions composed thereof
摘要
申请公布号
GB651601(A)
申请公布日期
1951.04.04
申请号
GB19480022832
申请日期
1948.08.30
申请人
COLUMBIA PROTEKTOSITE CO. INC.
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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