Check valve
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Description
The broken lines shown in the figures are for the purpose of illustrating portions of the check valve which form no part of the claimed design.
Claims
We claim the ornamental design for a check valve, as shown and described.
Referenced Cited
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Patent History
Patent number: D872233
Type: Grant
Filed: May 21, 2019
Date of Patent: Jan 7, 2020
Assignee: Emerson Electric Co. (St. Louis, MO)
Inventors: Gregory E. Sisk (Bonne Terre, MO), Terry F. Farace (St. Louis, MO)
Primary Examiner: Gino Colan
Application Number: 29/691,935
Type: Grant
Filed: May 21, 2019
Date of Patent: Jan 7, 2020
Assignee: Emerson Electric Co. (St. Louis, MO)
Inventors: Gregory E. Sisk (Bonne Terre, MO), Terry F. Farace (St. Louis, MO)
Primary Examiner: Gino Colan
Application Number: 29/691,935
Classifications
Current U.S. Class:
Check (D23/237)