herbert a. gilbert smokeless non-tobacco cigarette patent 1963 In 1963, filed a for “a safe and harmless means for and method of smoking.” Consideration of vaping products as

The flake breaks apart with ease and delivers a smoke that is dynamic and balanced for a dark, deep, earthy smoke

Results and Discussion Historical data on the prevalence of a) smoking and lung cancer, and b) smokeless tobacco and oral cancer are illustrated in Figure 1 with either tobacco use closely associated with occurrence of cancer

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Each agent in the initial population was assigned one of six tobacco use statuses representative of people who have never smoked (NT), people who currently smoke cigarettes (CS), people who previously smoked cigarettes (FS), people who currently use smokeless tobacco products (ST), people who previously used smokeless tobacco products (FST), and people who use both cigarettes and ST products (DU1)