Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5439185 | Bobbin holder | Zenzaburo Tsukumo | 1995-08-08 |
| 4511102 | Bobbin holder | Zenzaburo Tsukumo, Masae Tsukumo | 1985-04-16 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5439185 | Bobbin holder | Zenzaburo Tsukumo | 1995-08-08 |
| 4511102 | Bobbin holder | Zenzaburo Tsukumo, Masae Tsukumo | 1985-04-16 |