IP Library › Granted Patent US 4,611,607
Granted Patent Utility
US 4,611,607 · App. 06/700,584

Cigarette filter

Inventors: Martin L. Reynolds, Dorothy M. Frank, Tilford F. Riehl, Andrew McMurtrie
Patented Case View Patent ↗
Granted: Sep 16, 1986 Filed: Feb 11, 1985
Inventors
Martin L. Reynolds
Dorothy M. Frank
Tilford F. Riehl
Andrew McMurtrie
Assignee (at issue)
Brown & Williamson Tobacco Corporation

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Quick Facts
Patent No.
US 4,611,607
App. No.
06/700,584
Filed
1985-02-11
Granted
1986-09-16
Kind
A