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United States Utility Patents
4,217,660 - 4,217,669

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NumberTitle
4,217,660 Method and apparatus for the coding and decoding of digital data
4,217,661 Audio signal transmission system and method incorporating automatic frequency correction
4,217,662 Comforter and robe combination
4,217,663 Vest
4,217,664 Prosthesis and method for creating a stoma
4,217,665 Prosthesis for use in valvuloplasty
4,217,666 Tibial prosthesis having a U-shaped intramedullary stem
4,217,667 Drain lint separator and strainer
4,217,668 Portable toilet
4,217,669 Convertible seat



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