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发明名称
BUILDING BLOCK
摘要
申请公布号
CA392506(A)
申请公布日期
1940.11.12
申请号
CAD392506
申请日期
申请人
UNITED STATES GYPSUM COMPANY
发明人
GEORGE L. PHELPS;GEORGE D. KING
分类号
主分类号
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