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发明名称
Respirator
摘要
申请公布号
US2056692(A)
申请公布日期
1936.10.06
申请号
US19340745780
申请日期
1934.09.27
申请人
ROCHE DANIEL H
发明人
ROCHE DANIEL H.
分类号
A62B23/02
主分类号
A62B23/02
代理机构
代理人
主权项
地址
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