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经营范围
发明名称
Improvements in or relating to air or gas filters
摘要
申请公布号
GB446326(A)
申请公布日期
1936.04.28
申请号
GB19350028449
申请日期
1935.10.15
申请人
DEVELOPMENT ASSOCIATES, INC.
发明人
分类号
B01D46/18
主分类号
B01D46/18
代理机构
代理人
主权项
地址
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