ALEXANDRIA, Va., Aug. 6 -- United States Patent no. 12,377,315, issued on Aug. 5, was assigned to MACBO TECHNOLOGIES LLC (Denver).
"Multi-resistance hand gripper ring" was invented by Yiming Gao (Shenzhen, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A hand grip ring including a gripper ring body which includes a first gripping portion group including two gripping portions and a second gripping portion group including two gripping portions, wherein the two gripping portions of at least one of the first gripping portion group and the second gripping group have concave grooves at an inner side thereof respectively to guide deformation of the two gripping portions, wherein the first gripping portion gro...