BUFFINGTON, Circuit Judge.
In the court below the plaintiff, assignee of patent No. 1,467,354, granted September 11, 1923, to Niels C. Christensen, for "Process of Concentrating Oxidized Ores and Minerals", brought suit against defendant charging infringement by reason of defendant's practice of the process disclosed in the Chapman-Littleford patent.
The two patents, viz., Christensen's and Chapman-Littleford's, were considered by the court below in our No...
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