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发明名称
摘要
申请公布号
US3172932(A)
申请公布日期
1965.03.09
申请号
USD3172932
申请日期
申请人
发明人
分类号
B28B23/22;E04B1/348
主分类号
B28B23/22
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代理人
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地址
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