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经营范围
发明名称
Improvements in or relating to variable speed driving apparatus
摘要
申请公布号
GB578753(A)
申请公布日期
1946.07.10
申请号
GB19430018046
申请日期
1943.11.01
申请人
LINK AVIATION DEVICES, INC.
发明人
分类号
G09B9/24
主分类号
G09B9/24
代理机构
代理人
主权项
地址
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