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Improvement of Ayrton-Perry winding as published in: S.O. Dorst, Noninductive resistance element, Patent US2421688, 1947

dorst_patent_us2421688.png

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United States Patent and Trademark Office, Public Domain


Patents are published as part of the terms of granting the patent to the inventor. Subject to limited exceptions reflected in 37 CFR 1.71(d) & (e) and 1.84(s), the text and drawings of a patent are typically not subject to copyright restrictions. Copyright law (17 U.S.C. § 105) states that all materials created by the United States government are in the public domain. However, there are restrictions of use. Anyone incorporating a work of the U.S. Government into a copyrighted work should be aware of 17 U.S.C. § 403. This section requires a copyright notice to contain a statement identifying what portions of the work consist of a work of the U.S.Government. Failure to do so could result in loss of copyright protection for the entire work.

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file/dorst_patent_us2421688_png.txt · Last modified: 2023/06/17 22:18 by 127.0.0.1

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