KI

Katsutoshi Ichikawa

PK Pilot Man-Nen-Hitsu Kabushiki Kaisha: 1 patents #23 of 63Top 40%
Overall (All Time): #4,026,678 of 4,157,543Top 100%
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Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4560298 Opening and closing device for retractable nib fountain pen Takeo Oki 1985-12-24