Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4890392 | Digital tape measure | Manabu Komura, Kunio Hirai, Kazuyoshi Okumura, Nobuyuki Yamamoto | 1990-01-02 |
| D295504 | Tape measure with digital display | Nobuyuki Yamamoto | 1988-05-03 |
| 4611402 | Digital tape measure | Nobuyuki Yamamoto | 1986-09-16 |