Improvements in the manufacture of pipes and the like of concrete or other cementitious material,申请号GB19370033062-传众专利搜索

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发明名称	Improvements in the manufacture of pipes and the like of concrete or other cementitious material
摘要
申请公布号	GB500899(A)	申请公布日期	1939.02.17
申请号	GB19370033062	申请日期	1937.11.30
申请人	WILLIAM ALFRED PORTER	发明人
分类号	B28B21/34	主分类号	B28B21/34
代理机构		代理人
主权项
地址

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