(Industry Forefront)', Music Trades (March 1, 2003), archived from the original on, QRS Music Technologies, Inc., has acquired Gulbransen, Inc. ^ 'QRS acquires Gulbransen: plans new types of reproducing technologies.related patents filed at the same time were: Automatic Rhythm Device, Automatic Repetitive Rhythm Instrument Timing Circuitry, and sound circuits of Snare Drum Instrument and Cow Bell Instrument. (assigned to Seeburg Corporation), 'Musical Instruments', issued Rhythm patterns were electronically generated by a 48-step binary counter using 6-stage flip-flops. ^ Seeburg Portable Select-A-Rhythm Service Manual (PDF).^ a b 'Select-a-Rhythm Vintage Drum Machine'.^ 'Rare Early Seeburg Rhythm Prince Synthesizer Drum Synth'.Includes 1957 brochures of 'Gulbransen Model B organ'. In 2002 or 2003, QRS Music Technologies acquired the brand and pianos were made by Samick. In 1985, Mission Bay Investments acquired the brand and produced Elka organs under the Gulbransen name. Around 1950, it was sold to CBS, then in 1964, merged with Seeburg Corporation, and production was once ceased in 1969. On the other hand, the owner of Gulbransen has changed several times since the 1950s.
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