Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654828 | Optical system and visual display apparatus | Takayoshi Togino | 1997-08-05 |
| 5644436 | Concentric optical system | Takayoshi Togino | 1997-07-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654828 | Optical system and visual display apparatus | Takayoshi Togino | 1997-08-05 |
| 5644436 | Concentric optical system | Takayoshi Togino | 1997-07-01 |