FRIEDMAN, Circuit Judge.
These are consolidated appeals from a judgment of the United States District Court for the Northern District of Illinois, holding that the appellee's patent was valid, enforceable, and infringed. We affirm in one appeal and dismiss the other appeal.
I
A. The pertinent facts are set forth in the district court's written findings. See part II below.
The patent (No. 4,278,080) (the '080 patent), issued to Joseph N. Schuch...
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