BOURQUIN, District Judge.
In this suit appellee alleged infringement of three patents; appellants denied invention and infringement. At trial, appellee limited evidence to patent No. 985,709, and the District Court sustained the patent, found infringement, and awarded usual relief.
The patent purports to be for invention of "certain new and useful improvements in methods of waterproofing cement blocks," and states that the object of the invention is to "waterproof...
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