LK

Lester M. Koelsch

EN Envirex: 1 patents #27 of 52Top 55%
Overall (All Time): #1,666,122 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
5067182 Swimming pool cover 1991-11-26
4881829 Submersible bearing assembly 1989-11-21
4549962 Rotating biological contactor 1985-10-29