Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D345557 | Telephone set | Masafuku Akatsu, Akira Abe, Seizo Ohta, Takeshi Nakatani | 1994-03-29 |
| D342252 | Telephone set | Masafuku Akatsu, Akira Abe, Seizo Ohta, Takeshi Nakatani | 1993-12-14 |