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经营范围
发明名称
Propeller
摘要
申请公布号
US2022562(A)
申请公布日期
1935.11.26
申请号
US19340742339
申请日期
1934.08.31
申请人
THE FIRM GRUMPELT PROPELLERBAU GESELLSCHAFT MIT BESCHRANKTER HAFTUNG
发明人
GRUMPELT OSKAR FRITZ AMANDUS EMIL
分类号
B64C11/20
主分类号
B64C11/20
代理机构
代理人
主权项
地址
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