ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,300, issued on Feb. 17, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).

"Indexing track and pin" was invented by Andrew Mueller (Sugar Land, Texas).

According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole tool is hydraulically actuated. The actuation system includes an indexing track and pin assembly. An operator may lose track of the location of the track and pin assembly. The indexing track and pin assembly includes a shifting indexing path. By moving the indexing track and pin assembly through the shifting indexing path, the indexing track and pin assembly will move to a known position without needing any pressure measurement."...