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发明名称
Rotary propeller
摘要
申请公布号
US1824667(A)
申请公布日期
1931.09.22
申请号
US19280273641
申请日期
1928.04.28
申请人
SYNDICAT "VAPROC"
发明人
GRUMPELT OSKAR FRITZ AMANDUS EMIL
分类号
B64C11/00
主分类号
B64C11/00
代理机构
代理人
主权项
地址
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