|
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| US5214804 | 27 janv. 1992 | 1 juin 1993 | | Protective mask with scarf |
| US5724677 | 8 mars 1996 | 10 mars 1998 | Minnesota Mining and Manufacturing Company | Multi-part headband and respirator mask assembly and process for making same |
| US6070579 | 8 mars 1996 | 6 juin 2000 | 3M Innovative Properties Company | Elastomeric composite headband |
| US6148817 | 23 janv. 1998 | 21 nov. 2000 | 3M Innovative Properties Company | Multi-part headband and respirator mask assembly and process for making same |
| US6272690 | 18 mars 1996 | 14 août 2001 | | Head covering |
