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经营范围
发明名称
Dusting process and appliance
摘要
申请公布号
GB410079(A)
申请公布日期
1934.05.10
申请号
GB19320021920
申请日期
1932.08.04
申请人
GOTTHARD FISCHER;HANS FREY
发明人
分类号
A47L13/40
主分类号
A47L13/40
代理机构
代理人
主权项
地址
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