Apparatus for grading material,申请号US19360057928-传众专利搜索

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发明名称	Apparatus for grading material
摘要
申请公布号	US2168838(A)	申请公布日期	1939.08.08
申请号	US19360057928	申请日期	1936.01.07
申请人	CHURCH	发明人	CHURCH RAYMOND E.;SELLARS GEORGE L.
分类号	B07B1/28	主分类号	B07B1/28
代理机构		代理人
主权项
地址

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