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发明名称
Course protractor
摘要
申请公布号
US3303568(A)
申请公布日期
1967.02.14
申请号
US19640416506
申请日期
1964.12.07
申请人
GEIGER HANS F
发明人
GEIGER HANS F.
分类号
G01C21/20
主分类号
G01C21/20
代理机构
代理人
主权项
地址
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