Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841382 | Audio recording device | Akihiko Sasaki | 1989-06-20 |
HA
Hiroaki Atsumi
Overall (1989): #105,774 of 140,708Top 80%
1
Patents 1989