IP Couture: Smoker's hat

I file this under Great Idea in Theory, But I Don't Think Anyone Would Wear Such a Hat in Public. Patent Number 4,858,627, the Smoker's Hat, patented in 1989, is sort of a medieval torture device that allows a person to enjoy a smoke without the smoke irritating others. I think it's sort of becoming, in a Black Knight kind of way.

Smoker's hat Walter C. Netschert