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经营范围
发明名称
Magnetic compass
摘要
申请公布号
GB658636(A)
申请公布日期
1951.10.10
申请号
GB19490000406
申请日期
1949.01.06
申请人
NEDERLANDSCHE CENTRALE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK;WILLEM JOHANNES DOMINICUS VAN DIJCK
发明人
分类号
G01C17/00
主分类号
G01C17/00
代理机构
代理人
主权项
地址
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