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发明名称
PRESSURE-BALANCED SLIDE VALVE
摘要
申请公布号
CA771963(A)
申请公布日期
1967.11.21
申请号
CAD771963
申请日期
申请人
AUTOMATIC SWITCH COMPANY
发明人
DAVID J. VOLLMER
分类号
主分类号
代理机构
代理人
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