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发明名称
Construction form
摘要
申请公布号
US1879738(A)
申请公布日期
1932.09.27
申请号
US19290336501
申请日期
1929.01.31
申请人
DICKERSON JOHN A
发明人
DICKERSON JOHN A.
分类号
B28B7/30
主分类号
B28B7/30
代理机构
代理人
主权项
地址
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