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James McLean is issued a patent for a piano.
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| Number | Title | Issue Date |
| 4758318 | Method for improvement of soil The molds infesting a given soil are extirpated by the flow of a pulsating direct current of not less than 50 mA to prevent a farm product from diseases causable by the aforementioned molds.... | 07/19/1988 |
| 4555345 | Method of treatment for separation of oil from oil-containing slurry waste An oil-containing slurry waste containing a soap component in the oil component thereof is foamed by stirring so that the oil component adheres to the froth produced by the foaming and rises to the surface of the slurry waste by virtue of buoyancy. Conseq... | 11/26/1985 |
