A heater is disclosed which comprises an electrical insulating material surrounding an annular heating element configuration; wherein there is no casing surrounding an annular heating element configuration. <IMAGE>
申请公布号
EP0940558(A1)
申请公布日期
1999.09.08
申请号
EP19990200644
申请日期
1999.03.05
申请人
SHELL INTERNATIONALE RESEARCH
发明人
BIELAMOWICZ, LAWRENCE JAMES;DE ROUFFIGNAC, ERIC;VINEGAR, HAROLD J.;WELLINGTON, SCOTT LEE
