JONES, Circuit Judge.
This appeal grows out of a suit under R.S. § 4915, 35 U.S.C.A. § 63, for the issuance of a patent.
The alleged invention in controversy is a discoid lift-turn valve composed of plate-like rotor and stator members, each having a corresponding plurality of ports which are selectively brought into registry by the rotation of the movable member. Thereby the flow of different liquids through the
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