Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D379160 | Buckle | Ronald C. Johansson, Vaughn B. Grannis | 1997-05-13 |
| D378610 | Full face respirator | Joseph G. Reischel, David P. Knivsland, David C. Byram, Vaughn B. Grannis | 1997-03-25 |