Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5037159 | Apparatus for collecting and packaging hazardous particulate materials | Howard G. Baker, Sheldon Lefkowitz | 1991-08-06 |
| 4969311 | Collecting and packaging hazardous particulate materials | Howard G. Baker, Sheldon Lefkowitz | 1990-11-13 |