Cleaning sponge
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The figures depict a two layer structure. Also, it is understood that the surface shading is not intended to be indicative of gloss or texture and forms no part of the claimed design.
Claims
The ornamental design for a cleaning sponge, as shown and described.
6735809 | May 18, 2004 | Parks |
Type: Grant
Filed: May 10, 2010
Date of Patent: Jul 12, 2011
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Inventors: Diane L. Regnier (Stillwater, MN), Angie M. Olson (Hager City, WI), Myhanh T. Truong (Cottage Grove, MN), Paul N. Daveloose (St. Paul, MN), Bonnie C. Lembitz (North St. Paul, MN)
Primary Examiner: Robin Webster
Attorney: Trisha D. Adamson
Application Number: 29/361,294