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United States Utility Patents
5,796,820 - 5,796,829

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NumberTitle
5,796,820 Recovery of previous filter coefficients with smaller capacity memory
5,796,821 Hearing aid telephone interconnect system
5,796,822 Portable electronic device having a rotatable earpiece
5,796,823 WITHDRAWN
5,796,824 Storage medium for preventing an irregular use by a third party
5,796,825 System for automatic decryption of file data on a per-use basis and automatic re-encryption within context of multi-threaded operating system under which applications run in real-time
5,796,826 Apparatus for limiting reproducible number of magnetic recording medium
5,796,827 System and method for near-field human-body coupling for encrypted communication with identification cards
5,796,828 Controlled-access broadcast signal receiving system
5,796,829 Conditional access system



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