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发明名称
Cleaning device
摘要
申请公布号
US1825851(A)
申请公布日期
1931.10.06
申请号
US19290381214
申请日期
1929.07.26
申请人
JAMES BROPSON
发明人
BROPSON JAMES
分类号
E03C1/302
主分类号
E03C1/302
代理机构
代理人
主权项
地址
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