KW

Knut Wallbaum

OE Otis Elevator: 1 patents #966 of 1,840Top 55%
Overall (All Time): #3,885,937 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5050721 Step riser profile for curved escalator Frank Sansevero, Peter Borchers 1991-09-24