ALEXANDRIA, Va., March 19 -- United States Patent no. 12,253,830, issued on March 18, was assigned to Omega SA (Biel/Bienne, Switzerland).

"Tool for separating a back from a middle of a timepiece, as well as a back having a slot adapted to receive the tool, and timepiece equipped with such a back" was invented by Philippe Loetscher (Evilard, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A timepiece and a tool to separate a back from a middle, which jointly delimit a watch case of this timepiece, inside which a horological movement is housed, this tool having the appearance of a wedge, i.e. an acute-shaped part formed by a first face and a second face which intersect at an angle of less than 90de...