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经营范围
发明名称
Improvements in or relating to navigating compasses
摘要
申请公布号
GB450489(A)
申请公布日期
1936.07.20
申请号
GB19350008650
申请日期
1935.03.20
申请人
CHADBURN'S (SHIP) TELEGRAPH COMPANY LIMITED;ALFRED CHADBURN BAMFORD
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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