Anti-syphon device

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Description

FIG. 1 is a perspective view of an anti-syphon device according to an embodiment of the invention.

FIG. 2 is a front elevational view of an anti-syphon device according to an embodiment of the invention.

FIG. 3 is a rear elevational view of an anti-syphon device according to an embodiment of the invention.

FIG. 4 is a top plan view of an anti-syphon device according to an embodiment of the invention; and,

FIG. 5 is a bottom plan view of an anti-syphon device according to an embodiment of the invention.

Items shown in broken lines are for illustrative purposes only and form no part of the claimed design.

Claims

I claim the ornamental design for an anti-syphon device, as shown and described.

Referenced Cited
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Patent History
Patent number: D637698
Type: Grant
Filed: May 19, 2009
Date of Patent: May 10, 2011
Assignee: Quality Machine of Iowa, Inc. (Audubon, IA)
Inventor: Timothy W. Greene (Brooklyn Park, MN)
Primary Examiner: T. Chase Nelson
Assistant Examiner: Eric L Goodman
Attorney: Patterson Thuente Christensen Pedersen P.A.
Application Number: 29/337,323
Classifications
Current U.S. Class: Trap (D23/268)