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经营范围
发明名称
Protective shield
摘要
申请公布号
US2109831(A)
申请公布日期
1938.03.01
申请号
US19370165249
申请日期
1937.09.23
申请人
STEVEN SZALKAY
发明人
SZALKAY STEVEN
分类号
F41H5/06
主分类号
F41H5/06
代理机构
代理人
主权项
地址
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