Patent
   D538422
Priority
Feb 06 2004
Filed
Aug 05 2004
Issued
Mar 13 2007
Expiry
Mar 13 2021
Assg.orig
Entity
unknown
55
8
n/a
The ornamental design for ventilation grids, as shown.

FIG. 1 is a perspective view of a first embodiment of a ventilation grid in accordance with the present invention;

FIG. 2 is a bottom view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a side view thereof;

FIG. 5 is a perspective view of a second embodiment of a ventilation grid in accordance with the present invention;

FIG. 6 is a bottom view thereof;

FIG. 7 is a top view thereof;

FIG. 8 is a side view thereof;

FIG. 9 is a perspective view of a third embodiment of a ventilation grid in accordance with the present invention;

FIG. 10 is a top view thereof;

FIG. 11 is a bottom view thereof; and,

FIG. 12 is a side view thereof.

Hooijmaaijers, Antonius Johannes Cornelis

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Executed onAssignorAssigneeConveyanceFrameReelDoc
Aug 05 2004RDW Beheer B.V.(assignment on the face of the patent)
Sep 23 2004HOOIJMAAIJERS, ANTONIUS JOHANNES CORNELISRDW BEHEER B V ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0153630617 pdf
Oct 29 2007RDW BEHEER B V HOLDING VORM EN TECHNIEK B V ASSIGNMENT OF ASSIGNORS INTEREST SEE DOCUMENT FOR DETAILS 0201120619 pdf
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