JK

John R. Kettlewell

SL Spar Aerospace Limited: 1 patents #9 of 54Top 20%
📍 Brampton, CA: #478 of 1,005 inventorsTop 50%
Overall (All Time): #4,119,489 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4221966 Infrared surveillance system Howard S. Kerr, John B. Driffield, deceased, Margaret D. Driffield, administrator 1980-09-09