Inventor

WARREN NIGEL DAVID

GB3 patents

Patents

3 patents

US6631722B2Oct 14, 2003

Tobacco smoke filter elements

BRITISH AMERICAN TOBACCO CO131 citations94

US7100420B2Sep 5, 2006

Cigarette monitoring

BRITISH AMERICAN TOBACCO CO25 citations84

US7249605B2Jul 31, 2007

Tobacco smoke filter elements

BRITISH AMERICAN TOBACCO CO10 citations80