VACUUM MOBILE APPARATUS FOR VENTING,ESPECIALLY FRESH CONCRETE MASS,申请号PL19750184874-传众专利搜索

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发明名称	VACUUM MOBILE APPARATUS FOR VENTING,ESPECIALLY FRESH CONCRETE MASS
摘要
申请公布号	PL108769(B1)	申请公布日期	1980.04.30
申请号	PL19750184874	申请日期	1975.11.20
申请人		发明人
分类号	B28B21/36;E02D15/02;F04B37/08;(IPC1-7):B28B21/36	主分类号	B28B21/36
代理机构		代理人
主权项
地址

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