When I send a draft patent application to an inventor who is new to the patent process, the inventor often asks why the claims seem to repeat themselves. A patent application often has one group of ...

SEVERAL circulars recently received from the Bureau of Standards of the Department of Corn- merce, Washington, well illustrate the untiring in- dustry to be found in the American public offices.

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If you enjoyed this article, I’d like to ask for your support. Scientific American has served as an advocate for science and industry for 180 years, and right now may be the most critical moment in ...