HANEY, Circuit Judge.
Appellee brought suit to obtain an injunction restraining appellant from making, using, or selling any furnace construction embodying the inventions disclosed in the Beall and Foltz patents, both of which are owned by appellee. Appellant asks review of the decree which granted the relief sought by appellee. The patents involved relate to furnace construction.
Witness Nathan E. Lewis, a mechanical engineer, testified on behalf of appellee...
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