Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10939477 | Service tool wireless access management | David Ginsberg, Fred G. Williams, Sandeep Sudi | 2021-03-02 |
| 10691779 | Service tool credential management | David Ginsberg, Fred G. Williams, Jody Phouthavong | 2020-06-23 |
| 10669122 | Service tool location-based function availability | David Ginsberg, Fred G. Williams, Jody Phouthavong | 2020-06-02 |
| 10294074 | Elevator recovery car | Xiaodong Luo, Zbigniew Piech, Randall Keith Roberts, Tadeusz Pawel Witczak | 2019-05-21 |
| 10244374 | Service tool proximity detection | David Ginsberg, Fred G. Williams, Jody Phouthavong | 2019-03-26 |