Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826409 | Closed type rotary compressor with rotating member to prevent back pressure on discharge valve | Takuho Hirahara, Takashi Yamamoto | 1989-05-02 |
HK
Hirokazu Kohayakawa
Overall (1989): #105,027 of 140,708Top 75%
1
Patents 1989