ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,499,857, issued on Dec. 16.
"Relative harmonic dynamic pitch control device and system" was invented by Richard Warren Toone (Columbus, N.J.).
According to the abstract* released by the U.S. Patent & Trademark Office: "In some aspects, a tremolo for a stringed-instrument includes a tremolo frame and tremolo cams including a laterally spaced-apart curved string contact surfaces at positions and spacings corresponding to string positions of strings for a stringed instrument. The tremolo lever is rotatably mounted to the tremolo frame to rotate about an axis of rotation, an upper portion of the tremolo lever adjacent the tremolo frame and a lower portion extending downwardly from the up...