首页>
外国专利>
structure comprising a container of substances of different specific weight and not soluble in them, so that an object containing a magnet and floats on the substance of high specific weightit executes prederminati movements urged from a external magnetic mechanism.
structure comprising a container of substances of different specific weight and not soluble in them, so that an object containing a magnet and floats on the substance of high specific weightit executes prederminati movements urged from a external magnetic mechanism.
