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| US4346931 | 12 nov 1980 | 31 aug 1982 | General Motors Corporation | Bifold vehicle door assembly |
| US5951098 | 15 aug 1997 | 14 sep 1999 | Fontaine Modification Company | Safety door for right-hand stand-up truck |
| US6682130 | 6 feb 2002 | 27 jan 2004 | Volvo Trucks North America, Inc. | Service vehicle |
