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经营范围
发明名称
Airplane ground lock
摘要
申请公布号
US2577330(A)
申请公布日期
1951.12.04
申请号
US19490107297
申请日期
1949.07.28
申请人
JOHNSTON ELMER O
发明人
JOHNSTON ELMER O.
分类号
B64F1/16
主分类号
B64F1/16
代理机构
代理人
主权项
地址
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