WJ

Willard L. Johnson

📍 Huntington Woods, MI: #17 of 137 inventorsTop 15%
🗺 Michigan: #13,574 of 86,293 inventorsTop 20%
Overall (All Time): #768,463 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
4966718 Cross flow filter method 1990-10-30
4964987 Cross flow filter apparatus 1990-10-23
4919805 Vertical leaf filter flush 1990-04-24
4859332 Filter leaf cleaning jet apparatus 1989-08-22
4790935 Filter leaf assembly with bonded spacer and sealer 1988-12-13
4579656 Leaf-type filter 1986-04-01
4519903 Filter machine 1985-05-28