Manhole cover comprises a groove having a section with a trapezoidal cross-section which opens downward and a section which opens upward and closes downward,申请号AT20070000534-传众专利搜索

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发明名称	Manhole cover comprises a groove having a section with a trapezoidal cross-section which opens downward and a section which opens upward and closes downward
摘要
申请公布号	AT504110(A4)	申请公布日期	2008.03.15
申请号	AT20070000534	申请日期	2007.04.04
申请人	HEINRICH MEIER EISENGIESSEREI GMBH & CO. KG	发明人
分类号	E02D29/14	主分类号	E02D29/14
代理机构		代理人
主权项
地址

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