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发明名称
DEVICES OF WHICH INDICATING MEMBERS CAN BE OBSERVED FROM DIFFERENT DIRECTIONS
摘要
申请公布号
CA474253(A)
申请公布日期
1951.06.05
申请号
CAD474253
申请日期
申请人
N.V. PHILIPS GLOEILAMPENFABRIEKEN
发明人
JAN BERGMANS;JOHAN GEORGE KRONOUER;MAX LEEUWIN
分类号
主分类号
代理机构
代理人
主权项
地址
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