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经营范围
发明名称
Variable pitch propeller
摘要
申请公布号
US1910246(A)
申请公布日期
1933.05.23
申请号
US19310524900
申请日期
1931.03.24
申请人
GENERAL ELECTRIC COMPANY
发明人
HEISLER CHARLES L.
分类号
B64C11/36
主分类号
B64C11/36
代理机构
代理人
主权项
地址
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