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Continue to ChatRockin’ Patent – Drexel University’s “Multi-Touch Piano Keyboard” https://www.russellip.com/rockin-patent-drexel-universitys-multi-touch-piano-keyboard/
Rockin’ Patent – Drexel University’s “Multi-Touch Piano Keyboard” https://www.russellip.com/rockin-patent-drexel-universitys-multi-touch-piano-keyboard/