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发明名称
AIR AND VACUUM VALVE APPARATUS
摘要
申请公布号
CA723947(A)
申请公布日期
1965.12.21
申请号
CAD723947
申请日期
申请人
SAMUEL L. KERR
发明人
SAMUEL L. KERR
分类号
主分类号
代理机构
代理人
主权项
地址
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