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| US5331307 | 5 nov. 1991 | 19 juil. 1994 | Mul-T-Lock, Ltd. | Vehicle anti-theft system including a gear shift lock and an anti-theft device operated thereby | | US5598140 | 9 mai 1994 | 28 janv. 1997 | Mul-T-Lock Inc. | Vehicle anti-theft system including a gearshift lock and an anti-theft device operated thereby | | US5609049 | 30 mars 1995 | 11 mars 1997 | | Transmission lock device | | US5899100 | 10 mars 1997 | 4 mai 1999 | | Transmission lock device | | US6101854 | 1 févr. 1999 | 15 août 2000 | | Control lever locking kit |
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