RH

Ralf Holzhauer

OE Otis Elevator: 2 patents #650 of 1,840Top 40%
Overall (All Time): #2,333,648 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4875568 Escalator handrail drive Dietrich E. Hermann 1989-10-24
4619355 Escalator handrail entry safety switch actuator Willy Adrian 1986-10-28