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发明名称
Billet identification
摘要
申请公布号
US2761229(A)
申请公布日期
1956.09.04
申请号
US19540449750
申请日期
1954.08.13
申请人
GREGORY INDUSTRIES, INC.
发明人
FRIEDLY ROBERT C.;TAWSE WILLIAM G.;SINGLETON ROBERT C.
分类号
G09F3/00
主分类号
G09F3/00
代理机构
代理人
主权项
地址
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