Anticipate This!™ has an excellent and entertaining string of posts on interesting patents called "They Invented What." The "Fresh Air Breathing Device and Method" (U.S. Patent 4,320,756)sounds harmless enough. As you can see from the picture, it is a method of breathing fresh air out of your toilet to avoid breathing toxic fumes while trapped in a bathroom. The idea seems good -- while you wait for the firepeople to rescue you, you don't suffocate or inhale toxic smoke. But still, I hope to never have to breathe out of the toilet.
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