Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5695115 | Modular trash chute and room for multistory building | Michael Paul Bracken | 1997-12-09 |
| 5645172 | Separated waste collection control for multistory building | — | 1997-07-08 |