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经营范围
发明名称
Retaining ring
摘要
申请公布号
US2420921(A)
申请公布日期
1947.05.20
申请号
US19450601746
申请日期
1945.06.27
申请人
WALDES KOH-I-NOOR, INC.
发明人
WALDES HARRV K.
分类号
F16B21/16
主分类号
F16B21/16
代理机构
代理人
主权项
地址
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