Mattress foundation
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Claims
I claim the ornamental design for a mattress foundation, as shown and described.
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Type: Grant
Filed: Nov 24, 2015
Date of Patent: Jul 25, 2017
Assignee: SERTA, INC (Hoffman Estates, IL)
Inventor: Leona Wightman (Dade City, FL)
Primary Examiner: Mary Ann Calabrese
Assistant Examiner: Jennifer L Rempfer
Application Number: 29/546,593