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经营范围
发明名称
Ball wheel for an aircraft
摘要
In a preferred embodiment, an apparatus, including: a ball wheel; and apparatus to cause the ball wheel to rotate in a selected direction.
申请公布号
US2008197694(A1)
申请公布日期
2008.08.21
申请号
US20070705650
申请日期
2007.02.14
申请人
BLEVIO HENRY L
发明人
BLEVIO HENRY L.
分类号
B60B19/14
主分类号
B60B19/14
代理机构
代理人
主权项
地址
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