DH

Dennis Hanvey

OE Otis Elevator: 1 patents #100 of 260Top 40%
Overall (2019): #488,552 of 560,194Top 90%
1
Patents 2019

Issued Patents 2019

Patent #TitleCo-InventorsDate
10252879 Brake operation management in elevators Amir Lotfi, Randall Keith Roberts, Ronnie E. Thebeau, Michael Garfinkel, Edward Piedra +1 more 2019-04-09