Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864188 | Ni-Fe base alloy sheet for use as a shadow mask and a shadow mask employing the same | Shinzo Sugai | 1989-09-05 |
| 4846747 | Shadow mask, and method of manufacturing the same | Emiko Higashinakagawa, Yasuhisa Ohtake, Masaharu Kanto | 1989-07-11 |