Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9912743 | Real-time collection and distribution of information for an event organized according to sub-events | — | 2018-03-06 |
| 5299448 | Positive pressure test apparatus for facepiece respirator | Richard D. Maryyanek, Joseph Z. Zdrok | 1994-04-05 |
| 4886056 | Breathing apparatus | — | 1989-12-12 |
| 4726978 | Charcoal fabric needled to supporting fabrics | — | 1988-02-23 |
| 4274979 | Manufacture of activated carbon | — | 1981-06-23 |