Screw conveyer apparatus,申请号US19480005081-传众专利搜索

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发明名称	Screw conveyer apparatus
摘要
申请公布号	US2556391(A)	申请公布日期	1951.06.12
申请号	US19480005081	申请日期	1948.01.29
申请人	HAWK ELWIN A	发明人	HAWK ELWIN A.
分类号	B28B3/22	主分类号	B28B3/22
代理机构		代理人
主权项
地址

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