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发明名称
Valve rotating device
摘要
申请公布号
US2516795(A)
申请公布日期
1950.07.25
申请号
US19460693413
申请日期
1946.08.28
申请人
THOMPSON PRODUCTS, INC.
发明人
NORTON SAMUEL H.
分类号
F01L1/32
主分类号
F01L1/32
代理机构
代理人
主权项
地址
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