Air grate for raised floors
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The broken line showing of the surrounding floor structure is included for the purpose of illustrating use and environment and forms no part of the claimed design.
Claims
The ornamental design for an air grate for raised floors, as shown and described.
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Type: Grant
Filed: May 4, 2007
Date of Patent: Feb 5, 2008
Assignee: Opstock, Inc. (Ada, MI)
Inventors: Mark O. DeJonge (Ada, MI), James F. Clifford (Byron Center, MI)
Primary Examiner: Ian Simmons
Assistant Examiner: David G Muller
Attorney: Price, Heneveld, Cooper, DeWitt & Litton LLP
Application Number: 29/279,626