MAJOR, Circuit Judge.
This is an action alleging infringement of two patents: No. 2,542,886, entitled "Dentifrice," granted February 20, 1951, to Edward C. Wach, and No. 2,622,058, entitled "Ammoniated Dentifrice," granted December 16, 1952, to Robert G. Kesel. (The former will hereinafter be referred to as the Wach and the latter as the Kesel patent.) Plaintiff, The University of Illinois Foundation, acquired the patents by assignment from Wach and Kesel. Both patents...
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