Making paper board,申请号US19290392370-传众专利搜索

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发明名称	Making paper board
摘要
申请公布号	US1889177(A)	申请公布日期	1932.11.29
申请号	US19290392370	申请日期	1929.09.13
申请人	THE RICHARDSON COMPANY	发明人	KELLER CHARLES L.
分类号	D21J1/16	主分类号	D21J1/16
代理机构		代理人
主权项
地址

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