Non-return valve
Description
Any portions shown in dashed or broken lines are included for illustrative purposes only and form no part of the claimed design.
Claims
The ornamental design for a non-return valve, as shown and described.
Referenced Cited
Patent History
Patent number: D715404
Type: Grant
Filed: Jun 18, 2013
Date of Patent: Oct 14, 2014
Inventors: Peter Clarke (Nottingham), Edit Clarke (Nottingham), Andrea Clarke (Nottingham)
Primary Examiner: Cynthia Ramirez
Application Number: 29/458,349
Type: Grant
Filed: Jun 18, 2013
Date of Patent: Oct 14, 2014
Inventors: Peter Clarke (Nottingham), Edit Clarke (Nottingham), Andrea Clarke (Nottingham)
Primary Examiner: Cynthia Ramirez
Application Number: 29/458,349
Classifications
Current U.S. Class:
Valve Or Body Therefor (D23/233)