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发明名称
Tongue-and-groove concrete plank molding apparatus
摘要
申请公布号
US2831232(A)
申请公布日期
1958.04.22
申请号
US19540430842
申请日期
1954.05.19
申请人
LAWSON MANUFACTURING CORP.
发明人
LAWSON VICTOR F.
分类号
B28B7/00;B28B7/24;B28B23/02
主分类号
B28B7/00
代理机构
代理人
主权项
地址
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