MADDEN, Judge.
The plaintiff, a citizen of Great Britain, sues for the alleged infringement by the Government of his United States patent No. 1,473,337, granted November 6, 1923, on an application filed August 15, 1919. The patent is for a breathing compound to be supplied to deep-sea divers as a substitute for ordinary air. The problem at which the invention was aimed was that nitrogen, which makes up 80 percent of ordinary air, is highly soluble in the liquids and...
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