Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
March 29, 2011
Patent Application Number
12585295
Date Filed
September 10, 2009
Patent Citations Received
Patent Primary Examiner
Patent abstract
A back support board is pivotable between a flat state and a standing state. A support interposition board lies flat together with the back support board and a base board when the back support board 420 is in the flat state. A front support board is pivotable between a flat state and a standing state.
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