Check valve

Environmental heating and cooling; fluid handling and sanitary e – Fluid handling or treatment equipment – Valve or body therefor

Design Patent

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Design Patent

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D0602564

CLAIM:
The ornamental design for a check valve, as shown and described.

REFERENCES:
patent: 2339101 (1944-01-01), Parker
patent: D269633 (1983-07-01), Willinger et al.
patent: D321928 (1991-11-01), Milo
patent: D354335 (1995-01-01), Siposs
patent: D364210 (1995-11-01), Loerop et al.
patent: D370963 (1996-06-01), Daansen
patent: D419217 (2000-01-01), Lee
patent: D426617 (2000-06-01), Hansen
patent: D496091 (2004-09-01), Katzman et al.
patent: D536443 (2007-02-01), Latsos
patent: D576704 (2008-09-01), Gilcher

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