https://docs.google.com/viewer?url=www.google.com/patents/US5255452.pdf
I have attached the link to view the PDF of the patent I found when I searched for Silly Patents. It is a device for giving the illusion for anti-gravity. It is a shoe that supports the person who wears it when they lean forward. While it is silly I have seen something like this be "useful". While I personally have no use for it I have seen street performers use similar devices to just stand there leaning. I guess if you are a street performer this is something of high use. I do not know how to claim this as novel as it is just a support system, and it was filed in 1993. I guess in terms of a shoe this is a new idea for a shoe (one that supports your body weight when you lean forward). In addition to that, it can be considered a non-obvious shoe device. Again, I see no use for it personally and I still consider it a silly patent but I see why someone would have a use for it and why someone would want to patent it.
I thought Michael Jackson filed this patent and made these shoes famous. Although I could be mistaken, these shoes are practical for entertaining purposes. I know our pop-culture would not be the same without these anti-gravity devices.
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