Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6938380 | Elevator entrance sill structure and installation method | Harold S. Friedman, George Karazim, Jeffrey Friedman | 2005-09-06 |
| 6202798 | Elevator entrance door assembly and method of installation | Harold S. Friedman, Steven Carosella | 2001-03-20 |
| 6145630 | Sliding elevator-door assembly and method of installation | Harold S. Friedman, Steven Carosella | 2000-11-14 |