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经营范围
发明名称
Variable pitch propeller
摘要
申请公布号
US2316482(A)
申请公布日期
1943.04.13
申请号
US19410408088
申请日期
1941.08.23
申请人
JOHN A. WILLIAMSON
发明人
WILLIAMS CRAWFORD S.
分类号
B64C11/34
主分类号
B64C11/34
代理机构
代理人
主权项
地址
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