SANBORN, Circuit Judge.
This is an appeal from a judgment dismissing the plaintiffs' (appellants') complaint in an action brought by them against the defendants (appellees), charging infringement of two United States Letters Patent for inventions in metal door jambs or door frames made by Joseph J. Steffan, deceased. The first of these patents is No. 2,538,925 issued to Joseph J. Steffan January 23, 1951, upon an application filed February 13, 1948. The second patent...
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