Moog Patents

US Patent 3,475,623:
Electronic High-pass and Low-pass Filters Employing the Base-to-Emitter Resistance of Bipolar Transistors

I have been collecting copies of Moog patents, those invented by Robert Moog and as well as those assigned to Moog Music, Inc., and the synthesizer-related patents of Norlin Music, Inc., the company that purchased Moog Music. I present them here along with some hopefully entertaining commentary.

– J. Donald Tillman

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