DC

Donald A. Calleson

LG Liggett Group: 1 patents #3 of 15Top 20%
RT R.J. Reynolds Tobacco: 1 patents #421 of 746Top 60%
📍 Durham, NC: #1,858 of 4,103 inventorsTop 50%
🗺 North Carolina: #18,756 of 45,564 inventorsTop 45%
Overall (All Time): #2,282,386 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5568819 Cigarette filter Jeffery S. Gentry, Karen M. Womble, Chandra Kumar Banerjee, Richard L. Blakley, Russell D. Barnes +1 more 1996-10-29
4185393 Device for measuring the circumference of a cylindrical rod 1980-01-29