JK

John D. Keersmaekers

General Motors: 1 patents #107 of 586Top 20%
📍 Big Rapids, MI: #4 of 17 inventorsTop 25%
🗺 Michigan: #694 of 3,452 inventorsTop 25%
Overall (1989): #32,407 of 140,708Top 25%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4847768 Automatic engine oil change indicator system Ellen S. Schwartz, Donald John Smolenski, Christine M. Traylor, Gary J. Wallo 1989-07-11