DP

David R. Polak

OE Otis Elevator: 2 patents #56 of 260Top 25%
Overall (2019): #179,648 of 560,194Top 35%
2
Patents 2019

Issued Patents 2019

Patent #TitleCo-InventorsDate
10336581 System and method for reducing belt noise Christopher T. Chipman, Charles C. Coffin, Arthur Blanc, John P. Wesson, Yan Chen +2 more 2019-07-02
10246300 Elevator virtual aerodynamic shroud Ray-Sing Lin, David E. Parekh, Mark S. Thompson 2019-04-02