Patent
   D269633
Priority
Sep 08 1980
Filed
Sep 08 1980
Issued
Jul 05 1983
Expiry
Jul 05 1997
Assg.orig
Entity
unknown
13
6
n/a
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.

Willinger, Allan H., Itakura, Tsuyoshi

Patent Priority Assignee Title
6053896, May 01 1998 COBE CARDIOVASCULAR, INC Left ventricle valve
7331949, Feb 27 2003 Urinary catheter with check valve
D280847, Nov 12 1982 In-line transparent dripper valve
D283831, Jul 05 1983 Additive liquid metering device
D296592, Jan 08 1985 Astra Tech Aktiebolag Valve-provided connector for use in an infusion system
D320258, Aug 15 1985 Aktiebolaget Electrolux Valve
D321748, Nov 21 1988 Air gap anti-siphon valve
D354335, Apr 05 1993 QMI MEDICAL, INC Check valve
D364210, Jul 19 1994 Drummond Industries Transparent sump pump check valve
D497426, Feb 27 2003 ZYRIS, INC Intraoral device adapter
D602564, Dec 03 2008 Parker-Hannifin Corporation Check valve
D606167, Dec 03 2008 Parker-Hannifin Corporation Check valve
D708708, May 06 2013 Check valve
Patent Priority Assignee Title
3303819,
3967645, Jan 25 1974 Urocare Products, Inc. Check valve for urine collection device
4067414, Aug 18 1976 Lubricant fitting
202701,
203323,
D248485, Apr 18 1977 WHATMAN PUBLIC LIMITED COMPANY Filter
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Jul 13 1993WILLINGER, ALLAN H WILLINGER BROS , INC ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0066240602 pdf
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