Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356049 | Method of manufacturing an electret device | Sakae Tamura, Takehiko Kotoh, Masami Kobayashi | 1982-10-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4356049 | Method of manufacturing an electret device | Sakae Tamura, Takehiko Kotoh, Masami Kobayashi | 1982-10-26 |