ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,353, issued on July 21, was assigned to WHG PROPERTIES LLC (North Wales, Pa.).
"Firearm bolt assembly" was invented by William H. Geissele (Lower Gwynedd, Pa.) and David Duhaime (Ivyland, Pa.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A bolt assembly that includes a bolt defining at least one bolt opening and an extractor that is configured to pivot relative to the bolt. The extractor may define at least one extractor opening. The bolt assembly may include a pin positioned within the at least one bolt opening and the at least one extractor opening. The bolt assembly may include a retainer that is positioned inward relative to an exterior surface...