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发明名称
Airplane runway
摘要
申请公布号
US2321197(A)
申请公布日期
1943.06.08
申请号
US19410404085
申请日期
1941.07.25
申请人
GREULICH GERALD G
发明人
GREULICH GERALD G.
分类号
E01C9/10
主分类号
E01C9/10
代理机构
代理人
主权项
地址
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