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Patent
D565148
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Priority
Sep 17 2004
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Filed
Apr 25 2006
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Issued
Mar 25 2008
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Expiry
Mar 25 2022
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Assg.orig
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Entity
unknown
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10
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12
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n/a
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The ornamental design for an underdrain, as shown and described.
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FIG. 1 is a plan view of my underdrain;
FIG. 2 is a bottom view of the apparatus depicted in FIG. 1.
FIG. 3 is a front elevation view of the apparatus depicted in FIG. 1.
FIG. 4 is a rear elevation view of the apparatus depicted in FIG. 1.
FIG. 5 is a right side view of the apparatus depicted in FIG. 1; and,
FIG. 6 is a left side view of the apparatus depicted in FIG. 1.
Addison, Mark Kevin
Patent |
Priority |
Assignee |
Title |
9480939, |
Mar 05 2013 |
XYLEM WATER SOLUTIONS ZELIENOPLE LLC |
Underdrain and method for transferring forces and directing flow |
D612022, |
Dec 18 2008 |
Reln Pty Ltd |
Shallow drainage channel |
D658275, |
May 26 2011 |
Reln Pty Ltd |
Drainage channel |
D662190, |
May 13 2011 |
Reln Pty Ltd |
Shallow drainage channel |
D662191, |
May 13 2011 |
Reln Pty Ltd |
Drainage channel |
D672015, |
Jun 04 2010 |
Reln Pty Ltd |
Drainage grate frame |
D673250, |
May 13 2011 |
Reln Pty Ltd |
Drainage pit |
D684597, |
Dec 23 2011 |
ITT WATER & WASTEWATER LEOPOLD, INC |
Granular filter media retainer |
D687861, |
Jan 17 2012 |
Xylem Water Solutions Zelienople, LLC |
Filter media retainer |
D772382, |
May 21 2015 |
|
Drainage fitting for a retaining wall |
Patent |
Priority |
Assignee |
Title |
3840117, |
|
|
|
3956134, |
Jul 19 1973 |
Hi-Ran, Ltd. |
Underdrain for water filtration system |
5068034, |
May 03 1990 |
Unilift Corporation |
Purification underdrain with means to compensate for flow and pressure differences between laterals |
5108627, |
Feb 01 1991 |
F.B. Leopold Company, Inc.; F B LEOPOLD COMPANY, INC , A DE CORP |
Filter underdrain block |
5149427, |
Apr 03 1991 |
The F.B. Leopold Company, Inc. |
Cap for underdrains in gravity filters |
5160614, |
Feb 25 1992 |
ITT WATER & WASTEWATER LEOPOLD, INC |
Air duct block for air/water underdrain systems in gravity filters |
5296138, |
May 03 1990 |
Unifilt Corporation |
Underdrain for liquid purification systems |
5328608, |
May 27 1992 |
Xylem Water Solutions Zelienople, LLC |
Mutli-lateral filter underdrain block |
5462664, |
Aug 05 1992 |
|
Filter underdrain module and underdrain system |
5489388, |
Apr 12 1994 |
Xylem Water Solutions Zelienople, LLC |
Apparatus and method for improving gas backwash in lateral underdrains |
5639384, |
Apr 12 1994 |
Xylem Water Solutions Zelienople, LLC |
Apparatus and method for improving gas backwash in lateral underdrains |
6143188, |
Dec 22 1998 |
SEVERN TRENT WATER PURIFICATION, INC |
Underdrain block for filter media system |
Executed on | Assignor | Assignee | Conveyance | Frame | Reel | Doc |
Apr 25 2006 | | RG Delaware, Inc. | (assignment on the face of the patent) | | / |
Date |
Maintenance Fee Events |
n/a
Date |
Maintenance Schedule |
n/a