ALEXANDRIA, Va., Feb. 3 -- United States Patent no. 12,539,438, issued on Feb. 3.
"Magnetic fractional weight plates for an adjustable weight-lifting device" was invented by Matt Hartley (Madison, Miss.).
According to the abstract* released by the U.S. Patent & Trademark Office: "Magnetic fractional weight plates for use with an adjustable weight-lifting device, such as dumbbell and barbell is disclosed. Each magnetic fractional weight plate includes a body. The body may have a pie-like structure, an arc-like configuration, or a three-quadrant circular configuration. The body magnetically attaches to a weight plate of the adjustable weight-lifting device. In some implementations, the magnetic fractional weight plate includes protrusions e...