L. HAND, Circuit Judge.
This is an appeal from a decree which dismissed for invalidity a bill in equity to enjoin infringement of claims 1, 2, 3, 5, 6 and 7 of Patent No. 1,599,854, for a locomotive grease. Reasonably satisfactory results had been obtained in the lubrication of the driving journals of locomotives with earlier greases until 1919, but at about that time the locomotives increased in capacity and weight and their journals began to give trouble. This gradually...
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