Inventor
GRONDINE ARTHUR T
US3 patents
Patents
3 patentsUS10116635B1Oct 30, 2018
Mobile-based equipment service system using encrypted code offloading
OTIS ELEVATOR CO3 citations68
US11046552B2Jun 29, 2021
Method and system of reducing false actuation of safety brakes in elevator system
OTIS ELEVATOR CO0 citations59
US10578639B2Mar 3, 2020
Hybrid altimeter for measuring vertical velocity
OTIS ELEVATOR CO0 citations48