|
| US4006447 | 12 juin 1974 | 1 févr. 1977 | Thomson-CSF | Audibility-control system for radio receiver |
| US4785282 | 15 mars 1988 | 15 nov. 1988 | | Pulse coded warning system for racetrack |
| US4949067 | 17 mars 1989 | 14 août 1990 | | Warning system for racetrack |
| US5633629 | 8 févr. 1995 | 27 mai 1997 | | Traffic information system using light emitting diodes |
| US5635920 | 29 nov. 1994 | 3 juin 1997 | J. B. Pogue
John E. Cope
Glenn R. Vance | Remote traffic signal indicator |
| US6850170 | 25 mars 2002 | 1 févr. 2005 | | On-board vehicle system and method for receiving and indicating driving-related signals |
