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经营范围
发明名称
Variable pitch propeller
摘要
申请公布号
US2412923(A)
申请公布日期
1946.12.17
申请号
US19400355626
申请日期
1940.09.06
申请人
STEVENSON ENGINEERING CORPORATION
发明人
STEVENSON ROBERT
分类号
B64C11/42
主分类号
B64C11/42
代理机构
代理人
主权项
地址
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