Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6481534 | Apparatus for maintaining adequate overhead space for car top mechanics in elevator systems | — | 2002-11-19 |
| 6481537 | Rooftop safety apparatus for elevator servicing | Robert Isaman | 2002-11-19 |