Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5347094 | Elevator shaftway intrusion device | Robert F. Cummins, Joseph Vitiello, Thomas Brochhagan | 1994-09-13 |
| 5283400 | Elevator shaftway intrusion device | Robert F. Cummins, Joseph Vitiello, Thomas Brochhagan | 1994-02-01 |