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发明名称
utbunathur beta vindu
摘要
申请公布号
IS108(A7)
申请公布日期
1931.12.19
申请号
IS19300000108
申请日期
1930.06.18
申请人
HILMAR RIKTER BERTHENSEN;EMIL T.H. GRAVEN O. FL.
发明人
分类号
主分类号
代理机构
代理人
主权项
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