First- oder Gratabdeckung,申请号DE19681784161-传众专利搜索

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发明名称	First- oder Gratabdeckung
摘要
申请公布号	DE1784161(B1)	申请公布日期	1971.05.13
申请号	DE19681784161	申请日期	1968.07.12
申请人	BRAAS & CO GMBH	发明人
分类号	E04D1/36	主分类号	E04D1/36
代理机构		代理人
主权项
地址

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