Method of making cup brushes,申请号US19310529731-传众专利搜索

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发明名称	Method of making cup brushes
摘要
申请公布号	US1900575(A)	申请公布日期	1933.03.07
申请号	US19310529731	申请日期	1931.04.13
申请人	THE PITTSBURGH PLATE GLASS COMPANY	发明人	MERTES ROBERT G.
分类号	A46B13/00	主分类号	A46B13/00
代理机构		代理人
主权项
地址

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