Issued Patents 1989
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4883512 | Portable isolation enclosure | — | 1989-11-28 |
| 4865634 | Multiple location negative air pressure monitor | — | 1989-09-12 |
| 4860599 | Apparatus for sampling hazardous materials | — | 1989-08-29 |
| 4859221 | Method and means for replacing a malfunctioning air filtration unit | — | 1989-08-22 |
| 4826514 | Apparatus for dampening hazardous material | — | 1989-05-02 |
| 4820319 | Remote control and monitor means | — | 1989-04-11 |
| 4813984 | Self-contained air monitoring unit with agitated air capability | — | 1989-03-21 |
| 4804391 | Means for sampling the exhaust air of an air filtration unit | — | 1989-02-14 |