https://patentbrief.org/company/robert-a-moog Plain-English explanations of patents assigned to ROBERT A MOOG, newest first. en-us Sat, 13 Jun 2026 10:06:15 GMT https://patentbrief.org/patent/us/3475623/moog-synthesizer-ladder-filter A 1969 invention by Robert Moog that uses the internal resistance of transistors to create the iconic filters that define the sound of analog synthesizers. Tue, 28 Oct 1969 00:00:00 GMT https://patentbrief.org/patent/us/3475623/moog-synthesizer-ladder-filter