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发明名称
Magic Compass
摘要
An apparatus and method for providing navigation and other information via a motor driven dial in response to the operator's voice commands.
申请公布号
US2012310533(A1)
申请公布日期
2012.12.06
申请号
US201213441062
申请日期
2012.04.06
申请人
PARLIN STEVEN JAMES
发明人
PARLIN STEVEN JAMES
分类号
G01C21/00
主分类号
G01C21/00
代理机构
代理人
主权项
地址
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