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发明名称
Apparatus for facing hardened concrete blocks
摘要
申请公布号
US2804671(A)
申请公布日期
1957.09.03
申请号
US19530337906
申请日期
1953.02.20
申请人
SAFFERT GEORGE J
发明人
SAFFERT GEORGE J.
分类号
B28B11/04
主分类号
B28B11/04
代理机构
代理人
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