RETRACTABLE GUARD FOR SEWAGE PIPES,申请号CA19902020514-传众专利搜索

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发明名称	RETRACTABLE GUARD FOR SEWAGE PIPES
摘要
申请公布号	CA2020514(A1)	申请公布日期	1991.01.07
申请号	CA19902020514	申请日期	1990.07.05
申请人	PINO, WILTON J.	发明人	PINO, WILTON J.
分类号	E03D11/00;E03F7/00	主分类号	E03D11/00
代理机构		代理人
主权项
地址

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