DS

Duane R. Stupienski

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #3,699,203 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5819877 Elevator evacuation deterrent device James A. Rivera, Richard E. Kulak, Michael J. Tracey, Valery Sheynkman, Blair J. Cohen 1998-10-13