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Publication numberUSD269633 S
Publication typeGrant
Application numberUS 06/185,001
Publication dateJul 5, 1983
Filing dateSep 8, 1980
Publication number06185001, 185001, US D269633 S, US D269633S, US-S-D269633, USD269633 S, USD269633S
InventorsAllan H. Willinger, Tsuyoshi Itakura
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Check valve
US D269633 S
Abstract  available in
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  1. The ornamental design for a check valve, substantially as shown.

FIG. 1 is a perspective view taken from the front and right side of a check valve, showing our new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a bottom plan view thereof; and

FIG. 6 is a sectional view taken along line 6--6 of FIG. 4.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US7331949 *Feb 27, 2003Feb 19, 2008Margaret Grahn MarisiUrinary catheter with check valve
US20040172009 *Feb 27, 2003Sep 2, 2004Marisi Margaret GrahnUrinary catheter with check valve
US20080125758 *Feb 6, 2008May 29, 2008Margaret Grahn MarisiUrinary catheter with check valve
U.S. ClassificationD23/237, D24/129