EB

Etienne Billant

OE Otis Elevator: 2 patents #650 of 1,840Top 40%
Overall (All Time): #1,797,902 of 4,157,543Top 45%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
11577936 Elevator apron Jean-Emile Rocher 2023-02-14
11198594 Elevator car apron Frederic Beauchaud, Guillaume Trouvain 2021-12-14