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经营范围
发明名称
Improvements in or relating to open circuit breathing apparatus
摘要
申请公布号
GB787218(A)
申请公布日期
1957.12.04
申请号
GB19560002481
申请日期
1956.01.25
申请人
LA SPIROTECHNIQUE
发明人
分类号
A62B7/04;B63C11/22
主分类号
A62B7/04
代理机构
代理人
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