https://patentbrief.org/company/arnold-electric-co Plain-English explanations of patents assigned to ARNOLD ELECTRIC Co, newest first. en-us Sat, 13 Jun 2026 10:08:54 GMT https://patentbrief.org/patent/us/1480914/blender-beverage-mixer-poplawski Stephen Poplawski's 1922 invention of the electric beverage mixer, which introduced the rotating blade at the base of a container to liquefy ingredients. Tue, 15 Jan 1924 00:00:00 GMT https://patentbrief.org/patent/us/1480914/blender-beverage-mixer-poplawski