Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4492031 | Vernier device of the digital display type for a universal parallel ruler | — | 1985-01-08 |
| 4270277 | Universal parallel ruler with converted display of displacement | — | 1981-06-02 |
| 4268969 | Universal parallel ruler including scale setting device | — | 1981-05-26 |
| 4233751 | Universal parallel ruler for three-dimensional drawing | Yoshitaka Gibu | 1980-11-18 |
| 4221056 | Universal parallel ruler with converted display of displacement | — | 1980-09-09 |