Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5042641 | Apparatus for cleaning the steps of an escalator | — | 1991-08-27 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5042641 | Apparatus for cleaning the steps of an escalator | — | 1991-08-27 |