JOINT SEALING DEVICE,申请号GB19700004722-传众专利搜索

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发明名称	JOINT SEALING DEVICE
摘要
申请公布号	GB1270912(A)	申请公布日期	1972.04.19
申请号	GB19700004722	申请日期	1970.01.30
申请人	W. R. GRACE & CO.	发明人
分类号	E01D19/06;E04B1/68;E04B1/686	主分类号	E01D19/06
代理机构		代理人
主权项
地址

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