OP

Otto L. Poon

Overall (All Time): #2,303,374 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5230406 Safety brake arrangement for elevators 1993-07-27
4928796 Lift 1990-05-29