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经营范围
发明名称
Improvements in or relating to air-screws
摘要
申请公布号
GB461007(A)
申请公布日期
1937.02.08
申请号
GB19350019478
申请日期
1935.07.08
申请人
MALDON CAVENDISH HARLEY
发明人
分类号
B64C11/36
主分类号
B64C11/36
代理机构
代理人
主权项
地址
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