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发明名称
Building-material-placement machine
摘要
申请公布号
US1788451(A)
申请公布日期
1931.01.13
申请号
US19290331049
申请日期
1929.01.08
申请人
CLAPP CHARLES G
发明人
CLAPP CHARLES G.
分类号
E02D15/02
主分类号
E02D15/02
代理机构
代理人
主权项
地址
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