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经营范围
发明名称
Rotary shaft construction
摘要
申请公布号
US2437820(A)
申请公布日期
1948.03.16
申请号
US19440527103
申请日期
1944.03.18
申请人
HUDSON EDWIN B
发明人
HUDSON EDWIN B.
分类号
B63H1/04
主分类号
B63H1/04
代理机构
代理人
主权项
地址
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