JD

John B. Driffield, deceased

SL Spar Aerospace Limited: 1 patents #9 of 54Top 20%
📍 Toronto, CA: #5,171 of 9,482 inventorsTop 55%
Overall (All Time): #4,119,488 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 R. Kettlewell, Margaret D. Driffield, administrator 1980-09-09