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经营范围
发明名称
Sealing means
摘要
申请公布号
US1948255(A)
申请公布日期
1934.02.20
申请号
US19330674837
申请日期
1933.06.08
申请人
BROOKS WINFRED M
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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