Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153622 | Pressure alarm for water-sealed camera | Masahiro Hayakawa | 1992-10-06 |
| 5111222 | Pressure alarm in water-sealed camera | Masahiro Hayakawa | 1992-05-05 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5153622 | Pressure alarm for water-sealed camera | Masahiro Hayakawa | 1992-10-06 |
| 5111222 | Pressure alarm in water-sealed camera | Masahiro Hayakawa | 1992-05-05 |