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发明名称
Roll device
摘要
申请公布号
USRE31554(E)
申请公布日期
1984.04.17
申请号
US19810226696
申请日期
1981.01.21
申请人
发明人
分类号
B21B27/03;B21B27/02;F16C35/073;F16D1/091;F16D1/094
主分类号
B21B27/03
代理机构
代理人
主权项
地址
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