Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822990 | Admission control system having a transponder actuated by an inquiry signal | Masuo Tamada, Tsutomu Tanaka | 1989-04-18 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4822990 | Admission control system having a transponder actuated by an inquiry signal | Masuo Tamada, Tsutomu Tanaka | 1989-04-18 |