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发明名称
Light relay compass for direction and indication
摘要
申请公布号
US1929400(A)
申请公布日期
1933.10.03
申请号
US19290412203
申请日期
1929.12.06
申请人
FRITZ SCHULTE
发明人
SCHULTE FRITZ
分类号
G01C17/00
主分类号
G01C17/00
代理机构
代理人
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