Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4884254 | Time display device | Masayuki Konishi, Chieji Katoh | 1989-11-28 |
SK
Shoichi Kawai
Overall (1989): #57,634 of 140,708Top 45%
1
Patents 1989