BREITENSTEIN, Circuit Judge.
This is a declaratory judgment action by plaintiff-appellee Halliburton Company claiming invalidity and noninfringement of U. S. Patent No. 2,959,555 owned by defendant-appellant Dow Chemical Company. Dow counterclaimed for infringement. After trial to the court, the patent was declared invalid and Halliburton was awarded attorneys' fees. Dow appeals.
At issue is a chemical cleaning process to remove scale deposits in large boilers...
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