A patent only requires a proposed mechanism of action. There's no requirement that it actually work.
Yes, but a lot of the patents have working models for them. Many inventors actually make videos of working devices. Of course, many have been bogus, too.
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I'm not asserting that none of these things are legit, just that I don't believe they are until I see it on the market.
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The problem is that the inventors are “persuaded” one-way-or-another to not bring their inventions to market. Sometimes it is money and sometimes cessation of life. If THEY don’t want it on the market, it never sees the light of day.
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