Expandable and collapsible structure with rollers
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United States of America Patent
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Nov 25, 2008
Grant Date -
Jul 20, 2006
app pub date -
Jan 14, 2005
filing date -
Jan 14, 2005
priority date (Note) -
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status (Latency Note)
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Abstract
An expandable and collapsible structure includes a plurality of roller supports, each roller support including at least two ends separated by a non-zero distance and at least one roller disposed at one of the at least two ends of the roller support, and at least one folding assembly disposed between two of the plurality of roller supports.
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