DF

Dorothy M. Frank

BT Brown & Williamson Tobacco: 4 patents #23 of 219Top 15%
📍 Louisville, KY: #708 of 3,201 inventorsTop 25%
🗺 Kentucky: #2,672 of 11,577 inventorsTop 25%
Overall (All Time): #1,300,598 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
5062434 Cigarette paper Paul L. Aulbach, David S. Roth 1991-11-05
4643206 Cigarette filter Martin L. Reynolds, Tilford F. Riehl 1987-02-17
4611607 Cigarette filter Martin L. Reynolds, Tilford F. Riehl, Andrew McMurtrie 1986-09-16
4580584 Cigarette filter Martin L. Reynolds, Tilford F. Riehl 1986-04-08