|
| US4053707 | 29 Mar 1976 | 11 Oct 1977 | Central Electricity Generating Board | Method and apparatus for high voltage insulation |
| US6831232 | 16 Jun 2002 | 14 Dic 2004 | | Composite insulator |
| US7028998 | 4 Mar 2003 | 18 Abr 2006 | MacLean-Fogg Company | Stabilizer bar |
| US7041913 | 6 Abr 2004 | 9 May 2006 | | Method and arrangement for providing a gas-tight housing joint |
| US7180004 | 18 Ene 2006 | 20 Feb 2007 | MacLean-Fogg Company | Method and arrangement for providing a gas-tight joint |
| US7646282 | 14 Dic 2007 | 12 Ene 2010 | | Insulator for cutout switch and fuse assembly |