IP Library › Granted Patent US 4,917,121
Granted Patent Utility
US 4,917,121 · App. 07/281,583

Smoking article

Inventors: Tilford F. Riehl, Robert R. Johnson
Patented Case View Patent ↗
Granted: Apr 17, 1990 Filed: Dec 9, 1988
Inventors
Tilford F. Riehl
Robert R. Johnson
Assignee (at issue)
Brown & Williamson Tobacco Corporation

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Quick Facts
Patent No.
US 4,917,121
App. No.
07/281,583
Filed
1988-12-09
Granted
1990-04-17
Kind
A