ALEXANDRIA, Va., March 17 -- United States Patent no. 12,576,461, issued on March 17.

"Method and apparatus for marking objects" was invented by Samuel Palmeter (Caro, Mich.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A laser etching system for marking one or more objects stored in a container includes a conveyor line and a conveyor drive. A laser etching unit is disposed above at least the second portion of the conveyor line and has a laser engine unit and a scan head assembly communicatively connected to the laser engine unit. A laser distance sensor is configured to detect an open container having one or more objects stored therein by taking a distance measurement from and differentiating between a low...