ALEXANDRIA, Va., Feb. 17 -- United States Patent no. 12,553,554, issued on Feb. 17, was assigned to Henn GmbH & Co. KG. (Dombim, Austria).
"Plug-in connector for connecting pipes for liquids or gaseous media" was invented by Harald Hartmann (Bartholomaberg, Austria).
According to the abstract* released by the U.S. Patent & Trademark Office: "The disclosure relates to a plug connector for connecting pipes for liquids or gaseous media, comprising a connector body and a locking element. An indicator element includes an indicator surface, wherein the indicator element is pretensioned by a spring element into an indicator position and can be moved between a rest position, in which the indicator surface is at least partly covered, and the indic...