Issued Patents All Time
Showing 76–80 of 80 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D300730 | Combined bell and lamp | — | 1989-04-18 |
| D299813 | Combined bell and lamp | — | 1989-02-14 |
| D299703 | Combined bell and lamp | — | 1989-02-07 |
| 4742328 | Audio and visual alarm device | Tadashi Ishii, Hikoji Iwasaki | 1988-05-03 |
| D293656 | Bell with lamp | — | 1988-01-12 |