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发明名称
INDEXING HEAD
摘要
申请公布号
CA829007(A)
申请公布日期
1969.12.09
申请号
CAD829007
申请日期
申请人
KEUFFEL AND ESSER COMPANY
发明人
KENT E. ERICKSON
分类号
主分类号
代理机构
代理人
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