Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D687944 | Blower unit for breathing mask | Albert F. Zwolinsky, Christopher G. Hall, Richard D. Marshal, Sally Leyland, Robert Carr | 2013-08-13 |
| D668758 | Breathing mask | Christopher G. Hall, Sally Leyland, Albert F. Zwolinsky, Robert Carr | 2012-10-09 |
| D668327 | Breathing mask | Christopher Sumner, Sally Leyland, Christopher G. Hall, Robert Carr, Albert F. Zwolinsky | 2012-10-02 |