Inventor

KULAK RICHARD

US2 patents

⚠️ This page may combine multiple inventors who share the name “KULAK RICHARD”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

OTIS ELEVATOR CO

1 patent

US7543686B2Jun 9, 2009

Elevator with rollers having selectively variable hardness

OTIS ELEVATOR CO13 citations79

TRACEY MICHAEL

1 patent

US8272481B2Sep 25, 2012

Guide assembly for at least one elevator door

TRACEY MICHAEL9 citations75