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发明名称
Elevation meter
摘要
申请公布号
US2780753(A)
申请公布日期
1957.02.05
申请号
US19530342459
申请日期
1953.03.16
申请人
SUN OIL COMPANY
发明人
MAYES FRED M.
分类号
G01C7/04
主分类号
G01C7/04
代理机构
代理人
主权项
地址
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