Frame structure for windows
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Claims
We claim the ornamental design for a frame structure for windows, as shown and described.
Type: Grant
Filed: May 14, 2013
Date of Patent: Jun 23, 2015
Assignee: VKR Holding A/S
Inventors: Jacob Christian Lund (Vejle), Michael Nygaard (Odense)
Primary Examiner: Doris Clark
Application Number: 29/454,780