Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4830477 | Zoom lens capable of obtaining focal lengths beyond a variable focal length range | Sadatoshi Takahashi, Keiji Ikemori, Nozomu Kitagishi, Tsunefumi Tanaka, Takashi Matsushita | 1989-05-16 |