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发明名称
Distance indicator
摘要
申请公布号
US2470807(A)
申请公布日期
1949.05.24
申请号
US19460718715
申请日期
1946.12.27
申请人
DAVIS JR CARL F
发明人
JR. CARL F. DAVIS,
分类号
G01B3/12
主分类号
G01B3/12
代理机构
代理人
主权项
地址
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