PTO Wrapper PDF
Dossier Espace Google
Patent
   D426617
Priority
Dec 18 1998
Filed
Dec 18 1998
Issued
Jun 13 2000
Expiry
Jun 13 2014
Inventors
Hansen, Al…
Assg.orig
Hansen Dev…
Assg.curr
HANSEN DEV…
Entity
unknown
Referenced by
26
References
4
Maint.:
n/a
The ornamental design for a check valve, as shown and described.

FIG. 1 is an elevational view of one side of the check valve of the present invention, the other side being a mirror image thereof.

FIG. 2 is an elevational view of one end of the check valve of the present invention.

FIG. 3 is an elevational view of the end opposite to the end of the check valve depicted in FIG. 2.

FIG. 4 is a top plan view of the check valve of the present invention; and,

FIG. 5 is a bottom plan view of the check valve of the present invention.
INVENTORS:

Hansen, Albert Frederick

THIS PATENT IS REFERENCED BY THESE PATENTS:
Patent Priority Assignee Title
10190726, Oct 01 2014 ROYS, CURTIS Check valve
10508425, Apr 20 2017 Overflow vent irrigation device
10677389, Oct 01 2014 Curtis Alan, Roys Check valve
7806235, Oct 04 2006 COMPRESSOR PRODUCTS INTERNATIONAL LLC Environmental compressor protection assembly
8069950, Oct 04 2006 COMPRESSOR PRODUCTS INTERNATIONAL LLC Environmental compressor protection assembly
8622082, Apr 27 2005 COMPRESSOR PRODUCTS INTERNATIONAL LLC Check valve and method and apparatus for extending life of check valves
8997936, Oct 04 2006 COMPRESSOR PRODUCTS INTERNATIONAL LLC Environmental compressor protection assembly
9353742, Oct 01 2014 ROYS, CURTIS Check valve
9611980, Oct 01 2014 ROYS, CURTIS Check valve
D437917, Sep 02 1999 Bermad Control flow valve
D594530, Nov 28 2005 Campbell Manufacturing, LLC Check valve with contoured body
D597630, Oct 04 2007 COMPRESSOR PRODUCTS INTERNATIONAL LLC Environmental compressor protection assembly
D602564, Dec 03 2008 Parker-Hannifin Corporation Check valve
D606167, Dec 03 2008 Parker-Hannifin Corporation Check valve
D647598, Jan 25 2011 Buerkert Werke GMBH Valve housing
D694370, Sep 28 2012 Pump check valve
D720430, Sep 02 2013 SMC Corporation Valve
D749194, Nov 27 2014 SMC Corporation Valve
D831167, Apr 20 2017 Overflow vent irrigation device
D835241, Jul 27 2016 ENCO ELECTRONIC SYSTEMS, LLC Flow meter housing
D935563, Feb 21 2020 LB EUROPE LIMITED Vacuum break twist tap
D935564, Feb 21 2020 LB EUROPE LIMITED Vacuum break twist tap
D947993, Feb 21 2020 LB EUROPE LIMITED Vacuum break twist tap
D948667, Feb 21 2020 LB EUROPE LIMITED Vacuum break twist tap
D958938, Feb 21 2020 LB EUROPE LIMITED Vacuum break twist tap
D958939, Feb 21 2020 LB EUROPE LIMITED Vacuum break twist tap
THIS PATENT REFERENCES THESE PATENTS:
Patent Priority Assignee Title
2289556,
2339101,
D297560, Dec 16 1985 ESSEF Corporation Colloidalizing venturi valve
D359103, Jan 19 1993 CREDIT SUISSE FIRST BOSTON, AS ADMINISTRATIVE AGENT Valve
ASSIGNMENT RECORDS    Assignment records on the USPTO
//
Executed onAssignorAssigneeConveyanceFrameReelDoc
Dec 18 1998Hansen Developments Ltd.(assignment on the face of the patent)
Jun 09 1999HANSEN, ALBERT FREDERICKHANSEN DEVELOPMENTS LTD ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0100310484 pdf
MAINTENANCE FEES AND DATES:    Maintenance records on the USPTO
n/a
Date Maintenance Fee Events


n/a
Date Maintenance Schedule