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经营范围
发明名称
Propelling and steering mechanism
摘要
申请公布号
US2612859(A)
申请公布日期
1952.10.07
申请号
US19480005464
申请日期
1948.01.30
申请人
BILLMAN BERYL I;PAUL SLACK
发明人
BILLMAN BERYL I.;SLACK PAUL
分类号
B63H16/20
主分类号
B63H16/20
代理机构
代理人
主权项
地址
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