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发明名称
Course-indicating apparatus for vehicles
摘要
申请公布号
US2314497(A)
申请公布日期
1943.03.23
申请号
US19390306010
申请日期
1939.11.24
申请人
GORDON HARGRAVE JOHN;CEDRIC WILLIAMS DENIS
发明人
HARGRAVE JOHN GORDON;WILLIAMS DENIS CEDRIC
分类号
G01C21/22
主分类号
G01C21/22
代理机构
代理人
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地址
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