ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,478,892, issued on Nov. 25.
"Sensorial activity toys" was invented by Sayer Murphy (East Aurora, N.Y.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A toy may include a platform including a surface, a channel defined by: the surface of the platform, a protrusion, including: a first protrusion segment extending from the surface of the platform, the first protrusion segment having a first distal edge segment disposed a protrusion distance from the surface of the platform; and a second protrusion segment extending from the surface of the platform, the second protrusion segment having a second distal edge segment, wherein the second distal edge segment is d...