Concrete block machine,申请号US19320607854-传众专利搜索

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发明名称	Concrete block machine
摘要
申请公布号	US1982730(A)	申请公布日期	1934.12.04
申请号	US19320607854	申请日期	1932.04.27
申请人	JOHN ERKMAN	发明人	ERKMAN JOHN
分类号	B28B5/02;B28B13/02	主分类号	B28B5/02
代理机构		代理人
主权项
地址

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