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发明名称
ELECTRICAL SWITCH DEVICE
摘要
申请公布号
CA455747(A)
申请公布日期
1949.04.05
申请号
CAD455747
申请日期
申请人
SPERRY GYROSCOPE COMPANY
发明人
HENRY RICHARD HESS
分类号
主分类号
代理机构
代理人
主权项
地址
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