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发明名称
Valve
摘要
申请公布号
US2241324(A)
申请公布日期
1941.05.06
申请号
US19340759196
申请日期
1934.12.26
申请人
THE SPARMAL ENGINEERING CORPORATION
发明人
SELBY LYNN OTIS
分类号
G05D23/12
主分类号
G05D23/12
代理机构
代理人
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