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发明名称
Concrete block making machine
摘要
申请公布号
US2218767(A)
申请公布日期
1940.10.22
申请号
US19360076642
申请日期
1936.04.27
申请人
PFEIFER FREDERICK W
发明人
PFEIFER FREDERICK W.
分类号
B28B1/10
主分类号
B28B1/10
代理机构
代理人
主权项
地址
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