PPT-Laser Pointer with built-in accessories
SO
phoebe-click
Published 2018-03-21 | 5174 Views
Lingbo Xu 10102014 A Patent Explanation Patent No US6542437 Date of Patent Apr 1 2003 Inventor Rui Chen NY What is it Laser beam 18 Pen 22 LCD 24 Switches 20amp28
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