|
| US6963301 | 31 janv. 2003 | 8 nov. 2005 | G-Track Corporation | System and method for near-field electromagnetic ranging |
| US7298314 | 4 oct. 2004 | 20 nov. 2007 | Q-Track Corporation | Near field electromagnetic positioning system and method |
| US7307595 | 10 nov. 2005 | 11 déc. 2007 | Q-Track Corporation | Near field location system and method |
| US7307595 | 10 nov. 2005 | 11 déc. 2007 | Q-Track Corporation | Near field location system and method |
| US7414571 | 30 août 2005 | 19 août 2008 | Q-Track Corporation | Low frequency asset tag tracking system and method |
