Patent
   D349567
Priority
Apr 09 1991
Filed
Apr 09 1991
Issued
Aug 09 1994
Expiry
Aug 09 2008
Assg.orig
Entity
unknown
18
5
n/a
The ornamental design for a cylindrical filter element, as shown and described.

FIG. 1 is a front elevation view of a cylindrical filter element showing our new design having a continuous spiral parallel bead pattern;

FIG. 2 is a front elevation view of a cylindrical filter element showing a second embodiment of our new design having a continuous spiral parallel bead pattern; and,

FIG. 3 is a front elevation view of a cylindrical filter element showing a third embodiment of our new design having a continuous spiral parallel bead pattern.

The broken line showing of environmental structure in FIGS. 1-3 is for illustrative purposes only and forms no part of the claimed design.

Miller, John D., Williamson, Kenneth M.

Patent Priority Assignee Title
7441664, May 23 2003 Helen of Troy Limited Water treatment devices and cartridges therefor
9744484, Jun 26 2014 Pall Corporation Helically wrapped filter
D374476, Jan 23 1995 Pall Corporation Cylindrical cage for a filter
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D403741, Jan 29 1998 CUMMINS FILTRATION IP,INC ; Kuss Corporation Cylindrical filter element
D404796, Apr 09 1991 Pall Corporation Cylindrical filter element
D406315, Jan 29 1998 CUMMINS FILTRATION IP,INC ; Kuss Corporation Cylindrical filter element
D406316, Jan 29 1998 CUMMINS FILTRATION IP,INC ; Kuss Corporation Cylindrical filter element
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D415819, Apr 09 1991 Pall Corporation Cylindrical filter element
D417715, Apr 09 1991 Pall Corporation Cylindrical filter element
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D420094, Jul 31 1998 Access Business Group International LLC Block filter
D420095, Apr 09 1991 Pall Corporation Cylindrical filter element
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Patent Priority Assignee Title
3241680,
3442392,
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GB1337170,
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Executed onAssignorAssigneeConveyanceFrameReelDoc
Apr 05 1991MILLER, JOHN D PALL CORPORATION OF NEW YORK,ASSIGNMENT OF ASSIGNORS INTEREST 0056670061 pdf
Apr 05 1991WILLIAMSON, KENNETH M PALL CORPORATION OF NEW YORK,ASSIGNMENT OF ASSIGNORS INTEREST 0056670061 pdf
Apr 09 1991Pall Corporation(assignment on the face of the patent)
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