Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D303173 | Vacuum cleaner | Isshin Miyamoto, Yasuo Nagamatsu, Yasuhiko Tanaka, Masataka Hidaka, Hideaki Sakamoto +1 more | 1989-08-29 |
MS
Masaharu Sakamoto
Overall (1989): #79,066 of 140,708Top 60%
1
Patents 1989