Improvements in or relating to the treatment of materials with bitumen or tar,申请号GB19420013854-传众专利搜索

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发明名称	Improvements in or relating to the treatment of materials with bitumen or tar
摘要
申请公布号	GB563996(A)	申请公布日期	1944.09.08
申请号	GB19420013854	申请日期	1942.10.02
申请人	WILFRED OSCAR PETZOLD	发明人
分类号	D21J1/08	主分类号	D21J1/08
代理机构		代理人
主权项
地址

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