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References
- ↑ Portable data processing and storage system, United States Patent 4667088
- ↑ Rix, Juliet (29 September 2004). "Talk time: Kane Kramer". The Guardian. Retrieved 21 October 2012.
- ↑ Arno Frank, einestages: Tech-Pionier Kane Kramer: Der wahre iGod, (Der Spiegel online, 19 October 2012) (in German)
- ↑ Apple Computer Inc. v. Burst.com, Inc. , (California, Northern District Court, January 4, 2007). See pages 9-12.