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经营范围
发明名称
Respirator, gas mask, and the like
摘要
申请公布号
US2070754(A)
申请公布日期
1937.02.16
申请号
US19350050848
申请日期
1935.11.21
申请人
NATHAN SCHWARTZ
发明人
SCHWARTZ NATHAN
分类号
A62B18/02
主分类号
A62B18/02
代理机构
代理人
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地址
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