Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828187 | Particulate separation chamber and bag disposal means in a negative pressure system for collection of hazardous material | Charles E. Davis | 1989-05-09 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4828187 | Particulate separation chamber and bag disposal means in a negative pressure system for collection of hazardous material | Charles E. Davis | 1989-05-09 |