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Grant of Interim Extension of the Term of U.S. Patent No. 4,826,811; PolyHeme® (Acellular Red Blood Cell Substitute)

The United States Patent and Trademark Office has issued a certificate under 35 U.S.C. 156(d)(5) for a fourth one-year interim extension of the term of U.S. Patent No. 4,826,811.

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www.federalregister.gov/documents/2006/06/21/E6-9767/grant-of-interim-extension-of-the-term-of-us-patent-no-4826811-polyheme-acellular-red-blood-cell (permanent link in the Federal Register, verified 2026-09-30)
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Published
2006-06-21
Document type
Notice
Source
USPTO documents published in the Federal Register (Federal Register API)(retrieved 2026-10-06)

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