Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D315354 | Book reader for the blind | Eiichi Yoshioka, Hirohiko Katayama | 1991-03-12 |
NK
Nobuyoshi Katayama
Overall (All Time): #3,871,996 of 4,157,543Top 95%
1
Patents All Time