Butterfly valve
Claims
The ornamental design for a butterfly valve, as shown and described.
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Type: Grant
Filed: Oct 3, 2018
Date of Patent: Jan 14, 2020
Assignee: A.R. Arena Products, Inc. (Rochester, NY)
Inventors: David Nowicky (Fairport, NY), Donald E. Wilcox (Rochester, NY)
Primary Examiner: Gino Colan
Application Number: 29/665,422