4. Photocopying
  5. Contact printing
  6. Light boxes

Ding-Yu Chen

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Contact charger having a selected perpendicular resistivity

Photocopying – Contact printing – Light boxes
Patent

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Contacting charging device for electrostatic photoreceptor drum

Electricity: electrical systems and devices – Electric charging of objects or materials
Patent

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Cursor mechanism with an encoding function

Computer graphics processing and selective visual display system – Display peripheral interface input device – Cursor mark position control device
Reexamination Certificate

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Profile ID: LFUS-PAI-P-643126

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