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发明名称
Locking device for throttle valves
摘要
申请公布号
US1800231(A)
申请公布日期
1931.04.14
申请号
US19300447283
申请日期
1930.04.25
申请人
INGERSOLL-RAND COMPANY
发明人
SLATER FRED M.
分类号
E21B1/30;F16K35/04
主分类号
E21B1/30
代理机构
代理人
主权项
地址
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