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发明名称
Respirator
摘要
申请公布号
US1946334(A)
申请公布日期
1934.02.06
申请号
US19300502575
申请日期
1930.12.15
申请人
SYLVIA SCHWARTZ
发明人
SCHWARTZ NATHAN
分类号
A41D13/11
主分类号
A41D13/11
代理机构
代理人
主权项
地址
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