Dual-focus optical scanner and such a scanner used as wandtype s
Duplicate laser marking discrete consumable articles
Dust dispersion system for a document reader
DX bar code reader
Dynamic card reader
Dynamic focusing apparatus for an optical imaging system using a
Dynamic omni-directional scan pattern generating arrangement...
Dynamic solid state diffractive optics applied for reading a...
Dynamically variable machine readable binary code and method for
Dynamically variable machine readable binary code and method for