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经营范围
发明名称
Refining discs with enlarged grooves
摘要
申请公布号
US3049307(A)
申请公布日期
1962.08.14
申请号
US19590848147
申请日期
1959.10.22
申请人
E. D. JONES CORPORATION
发明人
JR. DAVID R. DALZELL,
分类号
D21D1/30
主分类号
D21D1/30
代理机构
代理人
主权项
地址
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