Issued Patents 2011
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8074648 | Respiratory protection device | James R. Betz, Brandon H. Harmon, Scott A. Larson, David M. Castiglione | 2011-12-13 |
| 8015970 | Respirator, welding helmet, or face shield that has low surface energy hard-coat lens | Thomas P. Klun, Zai-Ming Qiu, Gerald R. Hofmann, Oscar S. Benz, Suresh S. Iyer +3 more | 2011-09-13 |
| D638929 | Respirator head harness | Nathan A. Abel, James R. Betz, Sean M. Burke, Michael Lynch, Matthew D. Reier | 2011-05-31 |
| D630726 | Exhale valve cover | Nathan A. Abel, James R. Betz, Sean M. Burke, Michael Lynch, Matthew D. Reier | 2011-01-11 |