JH

Junichi Hashimoto

PK Pentel Kabushiki Kaisha: 1 patents #2 of 14Top 15%
Overall (1982): #50,677 of 81,411Top 65%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4360280 Mechanical pencil having a lead detector Tomozo Sekiguchi 1982-11-23