PER CURIAM.
This is an appeal from a decree of the District Court dismissing the bill filed in the above-stated cause on the ground that claims 1, 3, 5, 8, and 14 of the Mitchell & White patent, No. 1,453,594, claim No. 7 of the Mitchell & White patent, No. 1,453,595, and claims 2 and 6 of the Marshall patent, No. 1,475,192, are invalid because of the lack of invention. We agree with the conclusions of the learned District Judge, and affirm the decree on his...
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