LINDLEY, District Judge.
To the plaintiff's suit for infringement of patent to Oberdorfer, No. 1,677,362, upon a portable bleacher, the defendant asserts two not unusual defenses, invalidity and noninfringement.
Plaintiff relies only upon claim 3, which is as follows: "In a portable stand structure, a pair of spaced supporting jacks each having pairs of opposite angularly disposed legs, the opposite legs of the jacks being inclined away from each other, and...
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