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发明名称
Roofing mop and method of making the same
摘要
申请公布号
US2905958(A)
申请公布日期
1959.09.29
申请号
US19550510353
申请日期
1955.05.23
申请人
DUWAMISH MFG. CO.
发明人
SANNES EARL A.
分类号
A47L13/24
主分类号
A47L13/24
代理机构
代理人
主权项
地址
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