4. Photocopying
  5. Contact printing
  6. Light boxes

Hiroki Ohba

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Method of deelectrification in an electrophotographic apparatus

Photocopying – Contact printing – Light boxes
Patent

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Printer with print density switching means

Photocopying – Contact printing – Light boxes
Patent

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Printer with print density switching means

Photocopying – Contact printing – Light boxes
Patent

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Push-push mechanism of pushbutton operating shaft

Electricity: circuit makers and breakers – Liquid contact – Time delay
Patent

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Profile ID: LFUS-PAI-P-133381

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