The Radium-Radio Receiver
magazine staff writer Mohammed Ulysses Fips described his invention of a revolutionary radio tube that made use of radium for its electronic emission. It required no batteries and had a theoretical life of 2500 years. It was also cheap, costing only 30 cents a tube, because of the extremely small amount of radium it used.
Unfortunately, because his Radium-Radio (or Ra-Ra) tube posed such a threat to various business interests, Fips found himself kidnapped by "burly gangsters" who kept him locked in a prison with his pet aardvark, Annie, for two years. After this experience, Fips decided not to market his invention himself, but rather to describe it in the pages of Radio-Craft instead.