IMPROVEMENTS IN SEALING WASHERS FOR USE WITH ROOFING SCREWS,申请号ZA19700001651-传众专利搜索

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发明名称	IMPROVEMENTS IN SEALING WASHERS FOR USE WITH ROOFING SCREWS
摘要
申请公布号	ZA7001651(B)	申请公布日期	1971.06.30
申请号	ZA19700001651	申请日期	1970.03.10
申请人	NAT PLANT HIRE LTD	发明人	WAINSTEIN S
分类号	F16S	主分类号	F16S
代理机构		代理人
主权项
地址

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