IP Library › Granted Patent US 4,898,191
Granted Patent Utility
US 4,898,191 · App. 07/281,584

Smoking device

Inventors: Robert R. Johnson, Tilford F. Riehl
Patented Case View Patent ↗
Granted: Feb 6, 1990 Filed: Dec 9, 1988
Inventors
Robert R. Johnson
Tilford F. Riehl
Assignee (at issue)
Brown & Williamson Tobacco Corporation

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Quick Facts
Patent No.
US 4,898,191
App. No.
07/281,584
Filed
1988-12-09
Granted
1990-02-06
Kind
A