DJ

David Alun James

OE Otis Elevator: 1 patents #94 of 284Top 35%
Overall (2022): #483,071 of 548,613Top 90%
1
Patents 2022

Issued Patents 2022

Patent #TitleCo-InventorsDate
11535488 Elevator position detection systems David Ginsberg, Ronnie E. Thebeau 2022-12-27