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发明名称
CLEANING DEVICE
摘要
申请公布号
US3457574(A)
申请公布日期
1969.07.29
申请号
USD3457574
申请日期
1966.12.12
申请人
ING. ALFRED SCHMIDT
发明人
WALTER HIRT
分类号
E01H1/00;(IPC1-7):A46B13/02;A47L25/06
主分类号
E01H1/00
代理机构
代理人
主权项
地址
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