发明名称
摘要 <p>A bell and spigot pipe joint including a bell end having a locked in sealing gasket and a thickened cross-sectional configuration is disclosed herein. A method and an assembly for making the bell end with its thickened cross-sectional configuration and with the sealing gasket locked in place are also disclosed herein.</p>
申请公布号 GR73522(B) 申请公布日期 1984.03.09
申请号 GR19237801569 申请日期 1978.08.03
申请人 JOHNS - MANVILLE CORPORATION 发明人
分类号 F16L21/02;B29C53/00;B29C57/02;B29C65/00;B29C65/02;B29C65/78 主分类号 F16L21/02
代理机构 代理人
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