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经营范围
发明名称
Broadcasting machine
摘要
申请公布号
US2243996(A)
申请公布日期
1941.06.03
申请号
US19380207431
申请日期
1938.05.12
申请人
BAUGHMAN BERNICE G
发明人
BAUGHMAN BERNICE G.
分类号
E01C19/20
主分类号
E01C19/20
代理机构
代理人
主权项
地址
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