Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832674 | Pulley and press-fit pulley structure | Takashi Takemoto, Hiromi Yamamoto | 1989-05-23 |
| 4816942 | Spring powered transducer retractor mechanism for data transfer apparatus | Toru Hayashi, Mamoru Ono | 1989-03-28 |