ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,400,621, issued on Aug. 26.
"String instrument" was invented by Am Baek (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a string instrument having a new structure that can amplify resonance using an analog method. In the string instrument according to the present invention, since auxiliary strings are provided inside a main body, when a user strums strings to play the string instrument, sound generated by the strings is amplified as the auxiliary strings vibrate due to vibration of the strings. Therefore, there is an advantage in that the sound generated when playing the string instrument becomes more ...