Roll-up retractable sheet device
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United States of America Patent
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Oct 9, 2012
Grant Date -
Aug 6, 2009
app pub date -
Jul 27, 2007
filing date -
Aug 1, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A device that can be used as an advertising display device, an information display device or as a shade or screen that has novel ways to charge the sheet retraction spring, novel ways to prevent tampering with the charge on the spring once the device in operation and that may utilize a pull bar which allows identification of information on the sheet while in a rolled-up state without an additional label.
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