BK

Bernard J. Kupfert

📍 Peoria, IL: #8 of 61 inventorsTop 15%
🗺 Illinois: #802 of 3,813 inventorsTop 25%
Overall (1989): #129,550 of 140,708Top 95%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4846305 Apparatus for rotatably positioning a ladder within a stairway — 1989-07-11