ALEXANDRIA, Va., June 4 -- United States Patent no. 12,318,059, issued on June 3, was assigned to Festool GmbH (Wendlingen, Germany).

"Closure device, system, particle collecting assembly, and suction device" was invented by Gerhard Grebing (Nurtingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A closure device for closing a particle capture volume, in particular a bag or a container, including an access element with an access element opening for providing an access to the particle capture volume, a closure slide which can be selectively displaced relative to the access element into a release position or into a closure position. In the release position the closure slide releases the access elemen...