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发明名称
Improvements in or relating to flying machines
摘要
申请公布号
GB348946(A)
申请公布日期
1931.05.21
申请号
GB19300020469
申请日期
1930.07.05
申请人
HANS ALFRED FREDERIK SIECK
发明人
分类号
B64C33/00
主分类号
B64C33/00
代理机构
代理人
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