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发明名称
Improvements relating to the producing of smoke-like vapour, chiefly as a wind indicator
摘要
申请公布号
GB502022(A)
申请公布日期
1939.03.06
申请号
GB19370024332
申请日期
1937.09.06
申请人
GENERAL AIRCRAFT LIMITED;WILLIAM WHILTON HARVEY
发明人
分类号
B64F1/18
主分类号
B64F1/18
代理机构
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