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发明名称
Cast worm wheel and method and apparatus for manufacturing the same
摘要
申请公布号
US2802372(A)
申请公布日期
1957.08.13
申请号
US19550529476
申请日期
1955.08.19
申请人
HATCH JAMES A
发明人
HATCH JAMES A.
分类号
B22C9/06
主分类号
B22C9/06
代理机构
代理人
主权项
地址
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