BARNES, Circuit Judge.
This is an appeal from a decision granting appellees' motion for summary judgment, holding the patent in suit invalid and dismissing the complaint. The district court had jurisdiction under 28 U.S.C. § 1338, and this Court has jurisdiction on appeal. 28 U.S.C. § 1291.
Appellants charge eight specifications of error which they state may be reduced to two questions:
I. Was there any material issue of fact involved in...
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