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发明名称
GAS-MASK INTAKE VALVE
摘要
申请公布号
PL152469(B1)
申请公布日期
1990.12.31
申请号
PL19880273360
申请日期
1988.06.27
申请人
发明人
分类号
A62B;A62B9/02;A62B18/10;(IPC1-7):A62B9/02
主分类号
A62B
代理机构
代理人
主权项
地址
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