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经营范围
发明名称
Seal
摘要
申请公布号
US2487419(A)
申请公布日期
1949.11.08
申请号
US19470763005
申请日期
1947.07.23
申请人
E. J. BROOKS COMPANY
发明人
BROOKS WINFRED M.
分类号
G09F3/03
主分类号
G09F3/03
代理机构
代理人
主权项
地址
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