Hirosi Dyama

PK Pentel Kabushiki Kaisha: 1 patents #76 of 170Top 45%

📍 Ibaraki, JP: #4,343 of 6,779 inventorsTop 65%

Overall (All Time): #4,052,060 of 4,157,543Top 100%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4384800	Ball holder for ball point pen	—	1983-05-24