US Patent Issued to RUAG Ammotec on April 14 for "Method and tool for producing a base piece of a multi-part cartridge case, base piece and cartridge case" (Swiss Inventors)

ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,573, issued on April 14, was assigned to RUAG Ammotec AG (Thun, Switzerland).

"Method and tool for producing a base piece of a multi-part cartridge case, base piece and cartridge case" was invented by Peter Biedermann (Lyss, Switzerland) and Fabian Gloor (Ersigen, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for producing a base piece for receiving a primer for a multi-part cartridge case may include producing (e.g., by deforming) an extraction groove for engagement by a firearm ejector. The production of the extraction groove may be before a receptacle for a case jacket of the multi-part cartridge case for receiving a projec...