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发明名称
Reversible pitch marine propeller
摘要
申请公布号
US2715447(A)
申请公布日期
1955.08.16
申请号
US19520325297
申请日期
1952.12.11
申请人
KELSON SR MALCOLM J
发明人
SR. MALCOLM J. KELSON,
分类号
B63H3/02
主分类号
B63H3/02
代理机构
代理人
主权项
地址
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