Rotary reducing machine,申请号US19320585789-传众专利搜索

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发明名称	Rotary reducing machine
摘要
申请公布号	US2031683(A)	申请公布日期	1936.02.25
申请号	US19320585789	申请日期	1932.01.09
申请人	THE JEFFREY MANUFACTURING COMPANY	发明人	ARMSTRONG WALTER J.
分类号	B02C13/31	主分类号	B02C13/31
代理机构		代理人
主权项
地址

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