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表3—1到1993年9月1日止中国专利局已授权的焊接技术领域的实用新型专利·序号实用新型专利名称 申请日 公告Et 专利号 授权日 专利权人 设计人585 非熔化极焊接电弧1991 07 15 1992 10 21 91218460.4 1992 06 17 镇江船舶学院 引弧装置586 交流弧焊机安全节1990 ll 23 1992 10
Table 3-1 Utility Model Patents Issued by the Chinese Patent Office in the Welding Technology Field as of September 1, 1993 · Serial No. Utility Model Patent Name Date of Application Publication Et Patent Number Authorized Date Patentee Designer 585 Non-Fusion Welding Arc 1991 07 15 1992 10 21 91218460.4 1992 06 17 Zhenjiang Shipyard arc device 586 AC arc welder safety section 1990 ll 23 1992 10