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经营范围
发明名称
Propeller for helicopters
摘要
申请公布号
US1880302(A)
申请公布日期
1932.10.04
申请号
US19300498518
申请日期
1930.11.27
申请人
LAMMEREN WILLEM PETRUS VAN
发明人
LAMMEREN WILLEM PETRUS VAN
分类号
B64C39/00
主分类号
B64C39/00
代理机构
代理人
主权项
地址
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