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发明名称
Mechanical advantage operator
摘要
申请公布号
US2614520(A)
申请公布日期
1952.10.21
申请号
US19500152914
申请日期
1950.03.30
申请人
CAMERON IRON WORKS INC.
发明人
ALLEN HERBERT
分类号
F16K31/52
主分类号
F16K31/52
代理机构
代理人
主权项
地址
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