Circuit Court of Appeals, Seventh Circuit.
EVAN A. EVANS, Circuit Judge.
Appellant's suit was to secure protection for its patent No. 724,210 bearing date March 31, 1903, covering "Improvements in Hot Air Pipe." The District Court found the patent invalid, and dismissed the bill. On appeal this court on April 10, 1917 (244 F. 172) reversed the decree, sustained three claims of the patent, but agreed with the district court that two of the claims (1 and 2) were invalid.
Thereafter the District Court...
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