ALEXANDRIA, Va., March 31 -- United States Patent no. 12,589,941, issued on March 31, was assigned to Amazon Technologies Inc. (Seattle).

"Flexible, robotic automated storage and retrieval system" was invented by Tye Brady (Southborough, Mass.), Gregory Longtine (Sudbury, Mass.) and Timothy Stallman (Groton, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Flexible, robotic automated storage and retrieval systems and processes may include one or more blocks of shelving systems, each block including a plurality of floors, and each floor including a plurality of storage grid locations for respective totes. A plurality of robotic drive units may traverse the storage grid locations using a plurality of highw...