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发明名称
Wall structure
摘要
申请公布号
US1797010(A)
申请公布日期
1931.03.17
申请号
US19280290328
申请日期
1928.07.05
申请人
MCGREGOR JAMES A
发明人
MCGREGOR JAMES A.
分类号
E04F19/06
主分类号
E04F19/06
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