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发明名称
Pin lock for pivoted link chain
摘要
申请公布号
US2749763(A)
申请公布日期
1956.06.12
申请号
US19520312993
申请日期
1952.10.03
申请人
JOY MANUFACTURING COMPANY
发明人
ROLLINS LESTER G.
分类号
E21C25/36
主分类号
E21C25/36
代理机构
代理人
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地址
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