Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date | Approx Value ⓘ |
|---|---|---|---|---|
| 5454448 | Elevator call buttons having plural illuminated indications of availability and use | Joseph Bittar, Thomas R. Bean | 1995-10-03 | $6,134,000 |
| 5325022 | Single, bi-color elevator hall enunciator lantern | — | 1994-06-28 | $4,924,000 |