Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8375951 | Buckle and respirator using such buckle, having a deformable cinch bar, and method | Yonas Gebrewold, Michael K. Domroese, Dwayne D. Daugaard, Lance E. Behymer | 2013-02-19 |
| 8342180 | Filtering face-piece respirator that has expandable mask body | Philip G. Martin, Yonas Gebrewold, Audra A. Wilson, Christopher P. Henderson, Thomas G. Skulley +4 more | 2013-01-01 |
| 8118026 | Filtering face-piece respirator support structure that has living hinges | Yonas Gebrewold, Thomas G. Skulley, Erik J. Johnson, Lance E. Behymer, Dwayne D. Daugaard +1 more | 2012-02-21 |
| 8066006 | Filtering face-piece respirator having nose clip molded into the mask body | Dwayne D. Daugaard, Yonas Gebrewold, Michael K. Domroese, Lance E. Behymer | 2011-11-29 |