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发明名称
Machine for making prestressed concrete members
摘要
申请公布号
US3305907(A)
申请公布日期
1967.02.28
申请号
US19640344095
申请日期
1964.02.11
申请人
AMERICAN CONCRETE CROSSTIE CORPORATION
发明人
BAKER ROBERT S.
分类号
B28B23/04;B28B23/06
主分类号
B28B23/04
代理机构
代理人
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地址
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