ALEXANDRIA, Va., Jan. 13 -- United States Patent no. 12,520,857, issued on Jan. 13, was assigned to SharkNinja Operating LLC (Needham, Mass.).

"Multi-stage dispenser assembly" was invented by Max Adams (Brookline, Mass.), Andrew Hamroff (Boston) and Alireza Hooshanginejad (Medway, Mass.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dispenser assembly is provided with a lever, a cam, and a seal. The lever is configured to be pulled by a user a first distance to a first position. The lever is further configured to be pulled by the user a second distance to a second position. The cam is configured to provide a first resistance to pulling the lever when the lever is pulled over the first distance to the first...